187989413 has 8 divisors (see below), whose sum is σ = 189630336. Its totient is φ = 186354000.

The previous prime is 187989407. The next prime is 187989433. The reversal of 187989413 is 314989781.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 187989413 - 2⁸ = 187989157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187989433) 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, 94295 + ... + 96267.

It is an arithmetic number, because the mean of its divisors is an integer number (23703792).

Almost surely, 2^187989413 is an apocalyptic number.

It is an amenable number.

187989413 is a deficient number, since it is larger than the sum of its proper divisors (1640923).

187989413 is a wasteful number, since it uses less digits than its factorization.

187989413 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2755.

The product of its digits is 435456, while the sum is 50.

The square root of 187989413 is about 13710.9231272004. The cubic root of 187989413 is about 572.8546779809.

The spelling of 187989413 in words is "one hundred eighty-seven million, nine hundred eighty-nine thousand, four hundred thirteen".