187880187740 has 24 divisors (see below), whose sum is σ = 450912450912. Its totient is φ = 64416064320.

The previous prime is 187880187709. The next prime is 187880187743. The reversal of 187880187740 is 47781088781.

It is a self number, because there is not a number n which added to its sum of digits gives 187880187740.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187880187743) 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, 671000531 + ... + 671000810.

It is an arithmetic number, because the mean of its divisors is an integer number (18788018788).

Almost surely, 2^187880187740 is an apocalyptic number.

187880187740 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187880187740 is an abundant number, since it is smaller than the sum of its proper divisors (263032263172).

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

187880187740 is a wasteful number, since it uses less digits than its factorization.

187880187740 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1342001357 (or 1342001355 counting only the distinct ones).

The product of its (nonzero) digits is 5619712, while the sum is 59.

The spelling of 187880187740 in words is "one hundred eighty-seven billion, eight hundred eighty million, one hundred eighty-seven thousand, seven hundred forty".