1313987526 has 24 divisors (see below), whose sum is σ = 2849722824. Its totient is φ = 437572800.

The previous prime is 1313987497. The next prime is 1313987533. The reversal of 1313987526 is 6257893131.

1313987526 is a `hidden beast` number, since 1 + 31 + 3 + 98 + 7 + 526 = 666.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15811 + ... + 53646.

It is an arithmetic number, because the mean of its divisors is an integer number (118738451).

Almost surely, 2^1313987526 is an apocalyptic number.

1313987526 is an abundant number, since it is smaller than the sum of its proper divisors (1535735298).

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

1313987526 is a wasteful number, since it uses less digits than its factorization.

1313987526 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 70516 (or 70513 counting only the distinct ones).

The product of its digits is 272160, while the sum is 45.

The square root of 1313987526 is about 36248.9658611111. The cubic root of 1313987526 is about 1095.2932572897.

The spelling of 1313987526 in words is "one billion, three hundred thirteen million, nine hundred eighty-seven thousand, five hundred twenty-six".