18871487352 has 64 divisors (see below), whose sum is σ = 52961277600. Its totient is φ = 6225638400.

The previous prime is 18871487351. The next prime is 18871487359. The reversal of 18871487352 is 25378417881.

18871487352 is a `hidden beast` number, since 188 + 71 + 48 + 7 + 352 = 666.

It is a super-2 number, since 2×18871487352² (a number of 21 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18871487351) 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, 429399 + ... + 471302.

Almost surely, 2^18871487352 is an apocalyptic number.

18871487352 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

18871487352 is an abundant number, since it is smaller than the sum of its proper divisors (34089790248).

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

18871487352 is a wasteful number, since it uses less digits than its factorization.

18871487352 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 900813 (or 900803 counting only the distinct ones).

The product of its digits is 3010560, while the sum is 54.

The spelling of 18871487352 in words is "eighteen billion, eight hundred seventy-one million, four hundred eighty-seven thousand, three hundred fifty-two".