194492131 has 2 divisors, whose sum is σ = 194492132. Its totient is φ = 194492130.

The previous prime is 194492107. The next prime is 194492141. The reversal of 194492131 is 131294491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194492131 - 2⁵ = 194492099 is a prime.

It is a super-2 number, since 2×194492131² = 75654378041842322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (194492101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97246065 + 97246066.

It is an arithmetic number, because the mean of its divisors is an integer number (97246066).

Almost surely, 2^194492131 is an apocalyptic number.

194492131 is a deficient number, since it is larger than the sum of its proper divisors (1).

194492131 is an equidigital number, since it uses as much as digits as its factorization.

194492131 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 34.

The square root of 194492131 is about 13946.0435608096. The cubic root of 194492131 is about 579.3851302017.

The spelling of 194492131 in words is "one hundred ninety-four million, four hundred ninety-two thousand, one hundred thirty-one".