194903913 has 16 divisors (see below), whose sum is σ = 270872576. Its totient is φ = 124517520.

The previous prime is 194903899. The next prime is 194903921. The reversal of 194903913 is 319309491.

It is not a de Polignac number, because 194903913 - 2⁴ = 194903897 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (194903413) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 595 + ... + 19752.

It is an arithmetic number, because the mean of its divisors is an integer number (16929536).

Almost surely, 2^194903913 is an apocalyptic number.

It is an amenable number.

194903913 is a deficient number, since it is larger than the sum of its proper divisors (75968663).

194903913 is a wasteful number, since it uses less digits than its factorization.

194903913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20484.

The product of its (nonzero) digits is 26244, while the sum is 39.

The square root of 194903913 is about 13960.7991533436. The cubic root of 194903913 is about 579.7937366044.

The spelling of 194903913 in words is "one hundred ninety-four million, nine hundred three thousand, nine hundred thirteen".