18941512 has 32 divisors (see below), whose sum is σ = 37428480. Its totient is φ = 8968960.

The previous prime is 18941501. The next prime is 18941563. The reversal of 18941512 is 21514981.

It is a happy number.

It is a super-2 number, since 2×18941512² = 717561753692288, which contains 22 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 20337 + ... + 21247.

It is an arithmetic number, because the mean of its divisors is an integer number (1169640).

Almost surely, 2^18941512 is an apocalyptic number.

It is an amenable number.

18941512 is a deficient number, since it is larger than the sum of its proper divisors (18486968).

18941512 is a wasteful number, since it uses less digits than its factorization.

18941512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1053 (or 1049 counting only the distinct ones).

The product of its digits is 2880, while the sum is 31.

The square root of 18941512 is about 4352.1847387261. The cubic root of 18941512 is about 266.5660773393.

The spelling of 18941512 in words is "eighteen million, nine hundred forty-one thousand, five hundred twelve".