187920194 has 48 divisors (see below), whose sum is σ = 365420160. Its totient is φ = 71638560.

The previous prime is 187920181. The next prime is 187920197. The reversal of 187920194 is 491029781.

It is a hoax number, since the sum of its digits (41) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (187920197) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 48812 + ... + 52520.

It is an arithmetic number, because the mean of its divisors is an integer number (7612920).

Almost surely, 2^187920194 is an apocalyptic number.

187920194 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

187920194 is a deficient number, since it is larger than the sum of its proper divisors (177499966).

187920194 is a wasteful number, since it uses less digits than its factorization.

187920194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3783 (or 3776 counting only the distinct ones).

The product of its (nonzero) digits is 36288, while the sum is 41.

The square root of 187920194 is about 13708.3986665110. The cubic root of 187920194 is about 572.7843596669.

The spelling of 187920194 in words is "one hundred eighty-seven million, nine hundred twenty thousand, one hundred ninety-four".