18870359860 has 24 divisors (see below), whose sum is σ = 43230279456. Its totient is φ = 6861948960.

The previous prime is 18870359843. The next prime is 18870359863. The reversal of 18870359860 is 6895307881.

It is a Harshad number since it is a multiple of its sum of digits (55).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18870359863) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42886962 + ... + 42887401.

It is an arithmetic number, because the mean of its divisors is an integer number (1801261644).

Almost surely, 2^18870359860 is an apocalyptic number.

18870359860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18870359860 is an abundant number, since it is smaller than the sum of its proper divisors (24359919596).

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

18870359860 is a wasteful number, since it uses less digits than its factorization.

18870359860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 85774383 (or 85774381 counting only the distinct ones).

The product of its (nonzero) digits is 2903040, while the sum is 55.

The spelling of 18870359860 in words is "eighteen billion, eight hundred seventy million, three hundred fifty-nine thousand, eight hundred sixty".