18947135360 has 64 divisors (see below), whose sum is σ = 46150210080. Its totient is φ = 7435843584.

The previous prime is 18947135353. The next prime is 18947135419. The reversal of 18947135360 is 6353174981.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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, 245372 + ... + 313211.

Almost surely, 2^18947135360 is an apocalyptic number.

18947135360 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18947135360 is an abundant number, since it is smaller than the sum of its proper divisors (27203074720).

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

18947135360 is an equidigital number, since it uses as much as digits as its factorization.

18947135360 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 558655 (or 558643 counting only the distinct ones).

The product of its (nonzero) digits is 544320, while the sum is 47.

The spelling of 18947135360 in words is "eighteen billion, nine hundred forty-seven million, one hundred thirty-five thousand, three hundred sixty".