1513253491 has 8 divisors (see below), whose sum is σ = 1577351120. Its totient is φ = 1450376928.

The previous prime is 1513253479. The next prime is 1513253507. The reversal of 1513253491 is 1943523151.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1513253491 - 2¹⁷ = 1513122419 is a prime.

It is a super-2 number, since 2×1513253491² = 4579872256047374162, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1513253411) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 302736 + ... + 307693.

It is an arithmetic number, because the mean of its divisors is an integer number (197168890).

Almost surely, 2^1513253491 is an apocalyptic number.

1513253491 is a deficient number, since it is larger than the sum of its proper divisors (64097629).

1513253491 is an equidigital number, since it uses as much as digits as its factorization.

1513253491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610533.

The product of its digits is 16200, while the sum is 34.

The square root of 1513253491 is about 38900.5590062662. The cubic root of 1513253491 is about 1148.0757969253.

The spelling of 1513253491 in words is "one billion, five hundred thirteen million, two hundred fifty-three thousand, four hundred ninety-one".