187634780540 has 12 divisors (see below), whose sum is σ = 394033039176. Its totient is φ = 75053912208.

The previous prime is 187634780519. The next prime is 187634780609. The reversal of 187634780540 is 45087436781.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4690869494 + ... + 4690869533.

It is an arithmetic number, because the mean of its divisors is an integer number (32836086598).

Almost surely, 2^187634780540 is an apocalyptic number.

187634780540 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187634780540 is an abundant number, since it is smaller than the sum of its proper divisors (206398258636).

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

187634780540 is a wasteful number, since it uses less digits than its factorization.

187634780540 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9381739036 (or 9381739034 counting only the distinct ones).

The product of its (nonzero) digits is 4515840, while the sum is 53.

The spelling of 187634780540 in words is "one hundred eighty-seven billion, six hundred thirty-four million, seven hundred eighty thousand, five hundred forty".