1913497717 has 2 divisors, whose sum is σ = 1913497718. Its totient is φ = 1913497716.

The previous prime is 1913497711. The next prime is 1913497739. The reversal of 1913497717 is 7177943191.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1096338321 + 817159396 = 33111^2 + 28586^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1913497717 is a prime.

It is a super-2 number, since 2×1913497717² = 7322947025928424178, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1913497711) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 956748858 + 956748859.

It is an arithmetic number, because the mean of its divisors is an integer number (956748859).

Almost surely, 2^1913497717 is an apocalyptic number.

It is an amenable number.

1913497717 is a deficient number, since it is larger than the sum of its proper divisors (1).

1913497717 is an equidigital number, since it uses as much as digits as its factorization.

1913497717 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 333396, while the sum is 49.

The square root of 1913497717 is about 43743.5448609278. The cubic root of 1913497717 is about 1241.4883526671.

The spelling of 1913497717 in words is "one billion, nine hundred thirteen million, four hundred ninety-seven thousand, seven hundred seventeen".