18837270465 has 32 divisors (see below), whose sum is σ = 32554494336. Its totient is φ = 9246182400.

The previous prime is 18837270443. The next prime is 18837270469. The reversal of 18837270465 is 56407273881.

It is not a de Polignac number, because 18837270465 - 2⁶ = 18837270401 is a prime.

It is a super-2 number, since 2×18837270465² (a number of 21 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (18837270469) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77611 + ... + 209040.

It is an arithmetic number, because the mean of its divisors is an integer number (1017327948).

Almost surely, 2^18837270465 is an apocalyptic number.

18837270465 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

18837270465 is a deficient number, since it is larger than the sum of its proper divisors (13717223871).

18837270465 is a wasteful number, since it uses less digits than its factorization.

18837270465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 287009.

The product of its (nonzero) digits is 2257920, while the sum is 51.

The spelling of 18837270465 in words is "eighteen billion, eight hundred thirty-seven million, two hundred seventy thousand, four hundred sixty-five".