20187693882 has 32 divisors (see below), whose sum is σ = 44912568960. Its totient is φ = 6721577280.

The previous prime is 20187693881. The next prime is 20187693901. The reversal of 20187693882 is 28839678102.

It is a happy number.

20187693882 is a `hidden beast` number, since 20 + 187 + 69 + 388 + 2 = 666.

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

It is not an unprimeable number, because it can be changed into a prime (20187693881) 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, 164598 + ... + 259745.

It is an arithmetic number, because the mean of its divisors is an integer number (1403517780).

Almost surely, 2^20187693882 is an apocalyptic number.

20187693882 is an abundant number, since it is smaller than the sum of its proper divisors (24724875078).

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

20187693882 is a wasteful number, since it uses less digits than its factorization.

20187693882 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 425235 (or 425229 counting only the distinct ones).

The product of its (nonzero) digits is 2322432, while the sum is 54.

The spelling of 20187693882 in words is "twenty billion, one hundred eighty-seven million, six hundred ninety-three thousand, eight hundred eighty-two".