1513131990 has 16 divisors (see below), whose sum is σ = 3631516848. Its totient is φ = 403501856.

The previous prime is 1513131973. The next prime is 1513132007. The reversal of 1513131990 is 991313151.

1513131990 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (1513131973) and next prime (1513132007).

It is a super-2 number, since 2×1513131990² = 4579136838322720200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 25218837 + ... + 25218896.

It is an arithmetic number, because the mean of its divisors is an integer number (226969803).

Almost surely, 2^1513131990 is an apocalyptic number.

1513131990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1513131990 is an abundant number, since it is smaller than the sum of its proper divisors (2118384858).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1513131990 is a wasteful number, since it uses less digits than its factorization.

1513131990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50437743.

The product of its (nonzero) digits is 3645, while the sum is 33.

The square root of 1513131990 is about 38898.9972878479. The cubic root of 1513131990 is about 1148.0450692929.

The spelling of 1513131990 in words is "one billion, five hundred thirteen million, one hundred thirty-one thousand, nine hundred ninety".