187339890452 has 96 divisors (see below), whose sum is σ = 416494794240. Its totient is φ = 72406149120.

The previous prime is 187339890407. The next prime is 187339890457. The reversal of 187339890452 is 254098933781.

It is a junction number, because it is equal to n+sod(n) for n = 187339890391 and 187339890400.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187339890457) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 252074 + ... + 661982.

It is an arithmetic number, because the mean of its divisors is an integer number (4338487440).

Almost surely, 2^187339890452 is an apocalyptic number.

It is an amenable number.

187339890452 is an abundant number, since it is smaller than the sum of its proper divisors (229154903788).

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

187339890452 is a wasteful number, since it uses less digits than its factorization.

187339890452 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 410001 (or 409999 counting only the distinct ones).

The product of its (nonzero) digits is 13063680, while the sum is 59.

The spelling of 187339890452 in words is "one hundred eighty-seven billion, three hundred thirty-nine million, eight hundred ninety thousand, four hundred fifty-two".