1513641497 has 2 divisors, whose sum is σ = 1513641498. Its totient is φ = 1513641496.

The previous prime is 1513641419. The next prime is 1513641511. The reversal of 1513641497 is 7941463151.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 870309001 + 643332496 = 29501^2 + 25364^2 .

It is a cyclic number.

It is not a de Polignac number, because 1513641497 - 2²² = 1509447193 is a prime.

It is a super-2 number, since 2×1513641497² = 4582221162880802018, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1513641097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 756820748 + 756820749.

It is an arithmetic number, because the mean of its divisors is an integer number (756820749).

Almost surely, 2^1513641497 is an apocalyptic number.

It is an amenable number.

1513641497 is a deficient number, since it is larger than the sum of its proper divisors (1).

1513641497 is an equidigital number, since it uses as much as digits as its factorization.

1513641497 is an evil number, because the sum of its binary digits is even.

The product of its digits is 90720, while the sum is 41.

The square root of 1513641497 is about 38905.5458386076. The cubic root of 1513641497 is about 1148.1739127252.

The spelling of 1513641497 in words is "one billion, five hundred thirteen million, six hundred forty-one thousand, four hundred ninety-seven".