194289864 has 16 divisors (see below), whose sum is σ = 485724720. Its totient is φ = 64763280.

The previous prime is 194289859. The next prime is 194289913. The reversal of 194289864 is 468982491.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4047682 + ... + 4047729.

It is an arithmetic number, because the mean of its divisors is an integer number (30357795).

Almost surely, 2^194289864 is an apocalyptic number.

It is an amenable number.

194289864 is an abundant number, since it is smaller than the sum of its proper divisors (291434856).

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

194289864 is a wasteful number, since it uses less digits than its factorization.

194289864 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8095420 (or 8095416 counting only the distinct ones).

The product of its digits is 995328, while the sum is 51.

The square root of 194289864 is about 13938.7899044358. The cubic root of 194289864 is about 579.1842118062.

It can be divided in two parts, 19428 and 9864, that added together give a palindrome (29292).

The spelling of 194289864 in words is "one hundred ninety-four million, two hundred eighty-nine thousand, eight hundred sixty-four".