391674132013 has 2 divisors, whose sum is σ = 391674132014. Its totient is φ = 391674132012.

The previous prime is 391674131963. The next prime is 391674132023. The reversal of 391674132013 is 310231476193.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 369151026084 + 22523105929 = 607578^2 + 150077^2 .

It is a cyclic number.

It is not a de Polignac number, because 391674132013 - 2¹³ = 391674123821 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (391674132023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 195837066006 + 195837066007.

It is an arithmetic number, because the mean of its divisors is an integer number (195837066007).

Almost surely, 2^391674132013 is an apocalyptic number.

It is an amenable number.

391674132013 is a deficient number, since it is larger than the sum of its proper divisors (1).

391674132013 is an equidigital number, since it uses as much as digits as its factorization.

391674132013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 81648, while the sum is 40.

The spelling of 391674132013 in words is "three hundred ninety-one billion, six hundred seventy-four million, one hundred thirty-two thousand, thirteen".