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18458064270 = 233568363201
BaseRepresentation
bin10001001100001011…
…111011010110001110
31202122101002211002000
4101030023323112032
5300300231024040
612251324213130
71222256646312
oct211413732616
952571084060
1018458064270
117912106978
1236b169a1a6
1319820c1a29
14c715c7b42
157306db130
hex44c2fb58e

18458064270 has 32 divisors (see below), whose sum is σ = 49221505440. Its totient is φ = 4922150400.

The previous prime is 18458064269. The next prime is 18458064281. The reversal of 18458064270 is 7246085481.

18458064270 is a `hidden beast` number, since 1 + 8 + 4 + 580 + 64 + 2 + 7 + 0 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 34181331 + ... + 34181870.

It is an arithmetic number, because the mean of its divisors is an integer number (1538172045).

Almost surely, 218458064270 is an apocalyptic number.

18458064270 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

18458064270 is an abundant number, since it is smaller than the sum of its proper divisors (30763441170).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18458064270 is a wasteful number, since it uses less digits than its factorization.

18458064270 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68363217 (or 68363211 counting only the distinct ones).

The product of its (nonzero) digits is 430080, while the sum is 45.

The spelling of 18458064270 in words is "eighteen billion, four hundred fifty-eight million, sixty-four thousand, two hundred seventy".

Divisors: 1 2 3 5 6 9 10 15 18 27 30 45 54 90 135 270 68363201 136726402 205089603 341816005 410179206 615268809 683632010 1025448015 1230537618 1845806427 2050896030 3076344045 3691612854 6152688090 9229032135 18458064270