1513996491 has 8 divisors (see below), whose sum is σ = 2307042304. Its totient is φ = 865140840.

The previous prime is 1513996481. The next prime is 1513996501. The reversal of 1513996491 is 1946993151.

It is an interprime number because it is at equal distance from previous prime (1513996481) and next prime (1513996501).

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

It is not a de Polignac number, because 1513996491 - 2¹⁴ = 1513980107 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 1513996491.

It is not an unprimeable number, because it can be changed into a prime (1513996481) 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, 36047515 + ... + 36047556.

It is an arithmetic number, because the mean of its divisors is an integer number (288380288).

Almost surely, 2^1513996491 is an apocalyptic number.

1513996491 is a deficient number, since it is larger than the sum of its proper divisors (793045813).

1513996491 is an equidigital number, since it uses as much as digits as its factorization.

1513996491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72095081.

The product of its digits is 262440, while the sum is 48.

The square root of 1513996491 is about 38910.1078256023. The cubic root of 1513996491 is about 1148.2636660322.

The spelling of 1513996491 in words is "one billion, five hundred thirteen million, nine hundred ninety-six thousand, four hundred ninety-one".