187149394 has 8 divisors (see below), whose sum is σ = 286697088. Its totient is φ = 91583700.

The previous prime is 187149371. The next prime is 187149407. The reversal of 187149394 is 493941781.

187149394 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 an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 995382 + ... + 995569.

It is an arithmetic number, because the mean of its divisors is an integer number (35837136).

Almost surely, 2^187149394 is an apocalyptic number.

187149394 is a deficient number, since it is larger than the sum of its proper divisors (99547694).

187149394 is a wasteful number, since it uses less digits than its factorization.

187149394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1991000.

The product of its digits is 217728, while the sum is 46.

The square root of 187149394 is about 13680.2556262666. The cubic root of 187149394 is about 572.0001487440. Note that the first 3 decimals are identical.

The spelling of 187149394 in words is "one hundred eighty-seven million, one hundred forty-nine thousand, three hundred ninety-four".