194139708 has 24 divisors (see below), whose sum is σ = 517706112. Its totient is φ = 55468464.

The previous prime is 194139679. The next prime is 194139713. The reversal of 194139708 is 807931491.

It is a happy number.

194139708 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (42).

It is a self number, because there is not a number n which added to its sum of digits gives 194139708.

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, 1155510 + ... + 1155677.

It is an arithmetic number, because the mean of its divisors is an integer number (21571088).

Almost surely, 2^194139708 is an apocalyptic number.

It is an amenable number.

194139708 is an abundant number, since it is smaller than the sum of its proper divisors (323566404).

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

194139708 is a wasteful number, since it uses less digits than its factorization.

194139708 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2311201 (or 2311199 counting only the distinct ones).

The product of its (nonzero) digits is 54432, while the sum is 42.

The square root of 194139708 is about 13933.4025995089. The cubic root of 194139708 is about 579.0349667614.

The spelling of 194139708 in words is "one hundred ninety-four million, one hundred thirty-nine thousand, seven hundred eight".