194139774 has 16 divisors (see below), whose sum is σ = 431421840. Its totient is φ = 64713240.

The previous prime is 194139767. The next prime is 194139787. The reversal of 194139774 is 477931491.

194139774 is a `hidden beast` number, since 194 + 1 + 397 + 74 = 666.

194139774 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1797537 + ... + 1797644.

It is an arithmetic number, because the mean of its divisors is an integer number (26963865).

Almost surely, 2^194139774 is an apocalyptic number.

194139774 is an abundant number, since it is smaller than the sum of its proper divisors (237282066).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

194139774 is a wasteful number, since it uses less digits than its factorization.

194139774 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3595192 (or 3595186 counting only the distinct ones).

The product of its digits is 190512, while the sum is 45.

The square root of 194139774 is about 13933.4049679179. The cubic root of 194139774 is about 579.0350323779.

The spelling of 194139774 in words is "one hundred ninety-four million, one hundred thirty-nine thousand, seven hundred seventy-four".