18812940028 has 6 divisors (see below), whose sum is σ = 32922645056. Its totient is φ = 9406470012.

The previous prime is 18812940017. The next prime is 18812940037. The reversal of 18812940028 is 82004921881.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2351617500 + ... + 2351617507.

Almost surely, 2^18812940028 is an apocalyptic number.

It is an amenable number.

18812940028 is a deficient number, since it is larger than the sum of its proper divisors (14109705028).

18812940028 is a wasteful number, since it uses less digits than its factorization.

18812940028 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4703235011 (or 4703235009 counting only the distinct ones).

The product of its (nonzero) digits is 73728, while the sum is 43.

The spelling of 18812940028 in words is "eighteen billion, eight hundred twelve million, nine hundred forty thousand, twenty-eight".