187090994 has 16 divisors (see below), whose sum is σ = 285327360. Its totient is φ = 91993440.

The previous prime is 187090991. The next prime is 187090997. The reversal of 187090994 is 499090781.

It is an interprime number because it is at equal distance from previous prime (187090991) and next prime (187090997).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (187090991) 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, 31247 + ... + 36749.

It is an arithmetic number, because the mean of its divisors is an integer number (17832960).

Almost surely, 2^187090994 is an apocalyptic number.

187090994 is a deficient number, since it is larger than the sum of its proper divisors (98236366).

187090994 is a wasteful number, since it uses less digits than its factorization.

187090994 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5785.

The product of its (nonzero) digits is 163296, while the sum is 47.

The square root of 187090994 is about 13678.1209966866. The cubic root of 187090994 is about 571.9406449732.

The spelling of 187090994 in words is "one hundred eighty-seven million, ninety thousand, nine hundred ninety-four".