18497646860 has 48 divisors (see below), whose sum is σ = 48430206720. Its totient is φ = 5765499840.

The previous prime is 18497646857. The next prime is 18497646863. The reversal of 18497646860 is 6864679481.

It is an interprime number because it is at equal distance from previous prime (18497646857) and next prime (18497646863).

It is a self number, because there is not a number n which added to its sum of digits gives 18497646860.

It is not an unprimeable number, because it can be changed into a prime (18497646863) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6004190 + ... + 6007269.

It is an arithmetic number, because the mean of its divisors is an integer number (1008962640).

Almost surely, 2^18497646860 is an apocalyptic number.

18497646860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18497646860 is an abundant number, since it is smaller than the sum of its proper divisors (29932559860).

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

18497646860 is a wasteful number, since it uses less digits than its factorization.

18497646860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12011486 (or 12011484 counting only the distinct ones).

The product of its (nonzero) digits is 13934592, while the sum is 59.

The spelling of 18497646860 in words is "eighteen billion, four hundred ninety-seven million, six hundred forty-six thousand, eight hundred sixty".