187038387172 has 48 divisors (see below), whose sum is σ = 403111537920. Its totient is φ = 73945521792.

The previous prime is 187038387167. The next prime is 187038387233. The reversal of 187038387172 is 271783830781.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 402678 + ... + 732274.

It is an arithmetic number, because the mean of its divisors is an integer number (8398157040).

Almost surely, 2^187038387172 is an apocalyptic number.

It is an amenable number.

187038387172 is an abundant number, since it is smaller than the sum of its proper divisors (216073150748).

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

187038387172 is a wasteful number, since it uses less digits than its factorization.

187038387172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 331180 (or 331178 counting only the distinct ones).

The product of its (nonzero) digits is 3161088, while the sum is 55.

The spelling of 187038387172 in words is "one hundred eighty-seven billion, thirty-eight million, three hundred eighty-seven thousand, one hundred seventy-two".