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18858601429 = 292161130091
BaseRepresentation
bin10001100100000011…
…110110101111010101
31210200021210012202121
4101210003312233111
5302110300221204
612355153135541
71235222316163
oct214403665725
953607705677
1018858601429
117aa8209418
1237a385a5b1
131a17090975
14cac88c233
15755958b54
hex4640f6bd5

18858601429 has 8 divisors (see below), whose sum is σ = 19510449120. Its totient is φ = 18206857200.

The previous prime is 18858601423. The next prime is 18858601459. The reversal of 18858601429 is 92410685881.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-18858601429 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18858601423) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 611674 + ... + 641764.

It is an arithmetic number, because the mean of its divisors is an integer number (2438806140).

Almost surely, 218858601429 is an apocalyptic number.

It is an amenable number.

18858601429 is a deficient number, since it is larger than the sum of its proper divisors (651847691).

18858601429 is a wasteful number, since it uses less digits than its factorization.

18858601429 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 51731.

The product of its (nonzero) digits is 1105920, while the sum is 52.

The spelling of 18858601429 in words is "eighteen billion, eight hundred fifty-eight million, six hundred one thousand, four hundred twenty-nine".

Divisors: 1 29 21611 30091 626719 872639 650296601 18858601429