456187018989 has 32 divisors (see below), whose sum is σ = 671519084544. Its totient is φ = 273712489920.

The previous prime is 456187018943. The next prime is 456187018997. The reversal of 456187018989 is 989810781654.

It is not a de Polignac number, because 456187018989 - 2⁸ = 456187018733 is a prime.

It is an alternating number because its digits alternate between even and odd.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (456187018939) 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, 8934 + ... + 955224.

It is an arithmetic number, because the mean of its divisors is an integer number (20984971392).

Almost surely, 2^456187018989 is an apocalyptic number.

It is an amenable number.

456187018989 is a deficient number, since it is larger than the sum of its proper divisors (215332065555).

456187018989 is a wasteful number, since it uses less digits than its factorization.

456187018989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 946617.

The product of its (nonzero) digits is 34836480, while the sum is 66.

It can be divided in two parts, 45618 and 7018989, that added together give a palindrome (7064607).

The spelling of 456187018989 in words is "four hundred fifty-six billion, one hundred eighty-seven million, eighteen thousand, nine hundred eighty-nine".