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18871074614 = 272936417177
BaseRepresentation
bin10001100100110011…
…011011111100110110
31210201011020220202102
4101210303123330312
5302121443341424
612400320342102
71235433326150
oct214463337466
953634226672
1018871074614
118004258737
1237a7a74932
131a1983a152
14cb03b7ad0
15756abe7ae
hex464cdbf36

18871074614 has 32 divisors (see below), whose sum is σ = 32515995456. Its totient is φ = 8046305280.

The previous prime is 18871074613. The next prime is 18871074631. The reversal of 18871074614 is 41647017881.

It is a super-2 number, since 2×188710746142 (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18871074613) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2625794 + ... + 2632970.

It is an arithmetic number, because the mean of its divisors is an integer number (1016124858).

Almost surely, 218871074614 is an apocalyptic number.

18871074614 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

18871074614 is a deficient number, since it is larger than the sum of its proper divisors (13644920842).

18871074614 is a wasteful number, since it uses less digits than its factorization.

18871074614 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8120.

The product of its (nonzero) digits is 301056, while the sum is 47.

The spelling of 18871074614 in words is "eighteen billion, eight hundred seventy-one million, seventy-four thousand, six hundred fourteen".

Divisors: 1 2 7 14 293 586 641 1282 2051 4102 4487 7177 8974 14354 50239 100478 187813 375626 1314691 2102861 2629382 4205722 4600457 9200914 14720027 29440054 32203199 64406398 1347933901 2695867802 9435537307 18871074614