18870687960 has 32 divisors (see below), whose sum is σ = 56612064240. Its totient is φ = 5032183424.

The previous prime is 18870687959. The next prime is 18870687961. The reversal of 18870687960 is 6978607881.

It is an interprime number because it is at equal distance from previous prime (18870687959) and next prime (18870687961).

It is a super-2 number, since 2×18870687960² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a junction number, because it is equal to n+sod(n) for n = 18870687894 and 18870687903.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18870687961) 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, 78627747 + ... + 78627986.

Almost surely, 2^18870687960 is an apocalyptic number.

18870687960 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18870687960 is an abundant number, since it is smaller than the sum of its proper divisors (37741376280).

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

18870687960 is a wasteful number, since it uses less digits than its factorization.

18870687960 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 157255747 (or 157255743 counting only the distinct ones).

The product of its (nonzero) digits is 8128512, while the sum is 60.

The spelling of 18870687960 in words is "eighteen billion, eight hundred seventy million, six hundred eighty-seven thousand, nine hundred sixty".