194117913 has 12 divisors (see below), whose sum is σ = 305882928. Its totient is φ = 117647160.

The previous prime is 194117897. The next prime is 194117969. The reversal of 194117913 is 319711491.

It is not a de Polignac number, because 194117913 - 2⁴ = 194117897 is a prime.

It is not an unprimeable number, because it can be changed into a prime (194117983) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 980295 + ... + 980492.

It is an arithmetic number, because the mean of its divisors is an integer number (25490244).

Almost surely, 2^194117913 is an apocalyptic number.

It is an amenable number.

194117913 is a deficient number, since it is larger than the sum of its proper divisors (111765015).

194117913 is a wasteful number, since it uses less digits than its factorization.

194117913 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1960804 (or 1960801 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 194117913 is about 13932.6204642199. The cubic root of 194117913 is about 579.0132975907.

The spelling of 194117913 in words is "one hundred ninety-four million, one hundred seventeen thousand, nine hundred thirteen".