194157312 has 72 divisors (see below), whose sum is σ = 519380400. Its totient is φ = 64389120.

The previous prime is 194157307. The next prime is 194157331. The reversal of 194157312 is 213751491.

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 7 ways as a sum of consecutive naturals, for example, 184564 + ... + 185612.

Almost surely, 2^194157312 is an apocalyptic number.

194157312 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 194157312, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (259690200).

194157312 is an abundant number, since it is smaller than the sum of its proper divisors (325223088).

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

194157312 is a wasteful number, since it uses less digits than its factorization.

194157312 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1309 (or 1295 counting only the distinct ones).

The product of its digits is 7560, while the sum is 33.

The square root of 194157312 is about 13934.0343045365. The cubic root of 194157312 is about 579.0524679441.

The spelling of 194157312 in words is "one hundred ninety-four million, one hundred fifty-seven thousand, three hundred twelve".