194161264 has 80 divisors (see below), whose sum is σ = 429660000. Its totient is φ = 84188160.

The previous prime is 194161259. The next prime is 194161273. The reversal of 194161264 is 462161491.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 556162 + ... + 556510.

It is an arithmetic number, because the mean of its divisors is an integer number (5370750).

Almost surely, 2^194161264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194161264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (214830000).

194161264 is an abundant number, since it is smaller than the sum of its proper divisors (235498736).

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

194161264 is a wasteful number, since it uses less digits than its factorization.

194161264 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 506 (or 500 counting only the distinct ones).

The product of its digits is 10368, while the sum is 34.

The square root of 194161264 is about 13934.1761148623. The cubic root of 194161264 is about 579.0563967167.

The spelling of 194161264 in words is "one hundred ninety-four million, one hundred sixty-one thousand, two hundred sixty-four".