194572913 has 4 divisors (see below), whose sum is σ = 194608128. Its totient is φ = 194537700.

The previous prime is 194572897. The next prime is 194572951. The reversal of 194572913 is 319275491.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 194572913 - 2⁴ = 194572897 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (194572993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7313 + ... + 21038.

It is an arithmetic number, because the mean of its divisors is an integer number (48652032).

Almost surely, 2^194572913 is an apocalyptic number.

It is an amenable number.

194572913 is a deficient number, since it is larger than the sum of its proper divisors (35215).

194572913 is an equidigital number, since it uses as much as digits as its factorization.

194572913 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35214.

The product of its digits is 68040, while the sum is 41.

The square root of 194572913 is about 13948.9394937393. The cubic root of 194572913 is about 579.4653346653.

The spelling of 194572913 in words is "one hundred ninety-four million, five hundred seventy-two thousand, nine hundred thirteen".