18502769472 has 56 divisors (see below), whose sum is σ = 53405727072. Its totient is φ = 5606899200.

The previous prime is 18502769387. The next prime is 18502769473. The reversal of 18502769472 is 27496720581.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18502769473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4378279 + ... + 4382502.

Almost surely, 2^18502769472 is an apocalyptic number.

18502769472 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18502769472 is an abundant number, since it is smaller than the sum of its proper divisors (34902957600).

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

18502769472 is a wasteful number, since it uses less digits than its factorization.

18502769472 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8760807 (or 8760797 counting only the distinct ones).

The product of its (nonzero) digits is 1693440, while the sum is 51.

The spelling of 18502769472 in words is "eighteen billion, five hundred two million, seven hundred sixty-nine thousand, four hundred seventy-two".