18806869512 has 48 divisors (see below), whose sum is σ = 50954670000. Its totient is φ = 6266569056.

The previous prime is 18806869397. The next prime is 18806869519. The reversal of 18806869512 is 21596860881.

It is a happy number.

18806869512 is a `hidden beast` number, since 1 + 8 + 8 + 0 + 68 + 69 + 512 = 666.

It is not an unprimeable number, because it can be changed into a prime (18806869519) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 145939 + ... + 242717.

It is an arithmetic number, because the mean of its divisors is an integer number (1061555625).

Almost surely, 2^18806869512 is an apocalyptic number.

18806869512 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18806869512 is an abundant number, since it is smaller than the sum of its proper divisors (32147800488).

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

18806869512 is a wasteful number, since it uses less digits than its factorization.

18806869512 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 99490 (or 99483 counting only the distinct ones).

The product of its (nonzero) digits is 1658880, while the sum is 54.

The spelling of 18806869512 in words is "eighteen billion, eight hundred six million, eight hundred sixty-nine thousand, five hundred twelve".