195492931 has 4 divisors (see below), whose sum is σ = 195526600. Its totient is φ = 195459264.

The previous prime is 195492929. The next prime is 195492967. The reversal of 195492931 is 139294591.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 139294591 = 1013 ⋅137507.

It is a cyclic number.

It is not a de Polignac number, because 195492931 - 2¹ = 195492929 is a prime.

It is a super-2 number, since 2×195492931² = 76434972141941522, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (195492431) 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, 5646 + ... + 20563.

It is an arithmetic number, because the mean of its divisors is an integer number (48881650).

Almost surely, 2^195492931 is an apocalyptic number.

195492931 is a deficient number, since it is larger than the sum of its proper divisors (33669).

195492931 is an equidigital number, since it uses as much as digits as its factorization.

195492931 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33668.

The product of its digits is 87480, while the sum is 43.

The square root of 195492931 is about 13981.8786649005. The cubic root of 195492931 is about 580.3772130027.

The spelling of 195492931 in words is "one hundred ninety-five million, four hundred ninety-two thousand, nine hundred thirty-one".