18735979297 has 8 divisors (see below), whose sum is σ = 21415167936. Its totient is φ = 16057445712.

The previous prime is 18735979271. The next prime is 18735979313. The reversal of 18735979297 is 79297953781.

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

It is not a de Polignac number, because 18735979297 - 2¹⁵ = 18735946529 is a prime.

It is a super-2 number, since 2×18735979297² (a number of 21 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (18735979397) 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, 100858 + ... + 218275.

It is an arithmetic number, because the mean of its divisors is an integer number (2676895992).

Almost surely, 2^18735979297 is an apocalyptic number.

It is an amenable number.

18735979297 is a deficient number, since it is larger than the sum of its proper divisors (2679188639).

18735979297 is an equidigital number, since it uses as much as digits as its factorization.

18735979297 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 327527.

The product of its digits is 60011280, while the sum is 67.

The spelling of 18735979297 in words is "eighteen billion, seven hundred thirty-five million, nine hundred seventy-nine thousand, two hundred ninety-seven".