194646131 has 2 divisors, whose sum is σ = 194646132. Its totient is φ = 194646130.

The previous prime is 194646119. The next prime is 194646139. The reversal of 194646131 is 131646491.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 194646131 - 2²² = 190451827 is a prime.

It is a super-2 number, since 2×194646131² = 75774232626538322, which contains 22 as substring.

It is a Sophie Germain prime.

It is a junction number, because it is equal to n+sod(n) for n = 194646091 and 194646100.

It is not a weakly prime, because it can be changed into another prime (194646139) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97323065 + 97323066.

It is an arithmetic number, because the mean of its divisors is an integer number (97323066).

Almost surely, 2^194646131 is an apocalyptic number.

194646131 is a deficient number, since it is larger than the sum of its proper divisors (1).

194646131 is an equidigital number, since it uses as much as digits as its factorization.

194646131 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15552, while the sum is 35.

The square root of 194646131 is about 13951.5637474801. The cubic root of 194646131 is about 579.5380100299.

The spelling of 194646131 in words is "one hundred ninety-four million, six hundred forty-six thousand, one hundred thirty-one".