18812145460 has 24 divisors (see below), whose sum is σ = 39519637920. Its totient is φ = 7522166304.

The previous prime is 18812145449. The next prime is 18812145511. The reversal of 18812145460 is 6454121881.

It is a super-2 number, since 2×18812145460² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 110454 + ... + 223213.

It is an arithmetic number, because the mean of its divisors is an integer number (1646651580).

Almost surely, 2^18812145460 is an apocalyptic number.

18812145460 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18812145460 is an abundant number, since it is smaller than the sum of its proper divisors (20707492460).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18812145460 is a wasteful number, since it uses less digits than its factorization.

18812145460 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 336495 (or 336493 counting only the distinct ones).

The product of its (nonzero) digits is 61440, while the sum is 40.

The spelling of 18812145460 in words is "eighteen billion, eight hundred twelve million, one hundred forty-five thousand, four hundred sixty".