1913392531 has 2 divisors, whose sum is σ = 1913392532. Its totient is φ = 1913392530.

The previous prime is 1913392529. The next prime is 1913392601. The reversal of 1913392531 is 1352933191.

It is a weak prime.

It is an emirp because it is prime and its reverse (1352933191) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1913392531 - 2¹ = 1913392529 is a prime.

It is a super-2 number, since 2×1913392531² = 7322141955373171922, which contains 22 as substring.

Together with 1913392529, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1913392031) 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, 956696265 + 956696266.

It is an arithmetic number, because the mean of its divisors is an integer number (956696266).

Almost surely, 2^1913392531 is an apocalyptic number.

1913392531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913392531 is an equidigital number, since it uses as much as digits as its factorization.

1913392531 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 21870, while the sum is 37.

The square root of 1913392531 is about 43742.3425412952. The cubic root of 1913392531 is about 1241.4656038224.

The spelling of 1913392531 in words is "one billion, nine hundred thirteen million, three hundred ninety-two thousand, five hundred thirty-one".