187993894 has 8 divisors (see below), whose sum is σ = 307626408. Its totient is φ = 85451760.

The previous prime is 187993879. The next prime is 187993901. The reversal of 187993894 is 498399781.

It is a happy number.

187993894 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

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, 4272567 + ... + 4272610.

It is an arithmetic number, because the mean of its divisors is an integer number (38453301).

Almost surely, 2^187993894 is an apocalyptic number.

187993894 is a deficient number, since it is larger than the sum of its proper divisors (119632514).

187993894 is a wasteful number, since it uses less digits than its factorization.

187993894 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8545190.

The product of its digits is 3919104, while the sum is 58.

The square root of 187993894 is about 13711.0865360846. The cubic root of 187993894 is about 572.8592295518.

The spelling of 187993894 in words is "one hundred eighty-seven million, nine hundred ninety-three thousand, eight hundred ninety-four".