187930441640 has 16 divisors (see below), whose sum is σ = 422843493780. Its totient is φ = 75172176640.

The previous prime is 187930441631. The next prime is 187930441661. The reversal of 187930441640 is 46144039781.

It can be written as a sum of positive squares in 2 ways, for example, as 181958552356 + 5971889284 = 426566^2 + 77278^2 .

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, 2349130481 + ... + 2349130560.

Almost surely, 2^187930441640 is an apocalyptic number.

187930441640 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

187930441640 is an abundant number, since it is smaller than the sum of its proper divisors (234913052140).

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

187930441640 is a wasteful number, since it uses less digits than its factorization.

187930441640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4698261052 (or 4698261048 counting only the distinct ones).

The product of its (nonzero) digits is 580608, while the sum is 47.

The spelling of 187930441640 in words is "one hundred eighty-seven billion, nine hundred thirty million, four hundred forty-one thousand, six hundred forty".