1315011556 has 12 divisors (see below), whose sum is σ = 2301892992. Its totient is φ = 657327848.

The previous prime is 1315011547. The next prime is 1315011589. The reversal of 1315011556 is 6551105131.

It is a super-2 number, since 2×1315011556² = 3458510784827082272, which contains 22 as substring.

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 3 ways as a sum of consecutive naturals, for example, 27100 + ... + 58003.

It is an arithmetic number, because the mean of its divisors is an integer number (191824416).

Almost surely, 2^1315011556 is an apocalyptic number.

It is an amenable number.

1315011556 is a deficient number, since it is larger than the sum of its proper divisors (986881436).

1315011556 is a wasteful number, since it uses less digits than its factorization.

1315011556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 88970 (or 88968 counting only the distinct ones).

The product of its (nonzero) digits is 2250, while the sum is 28.

The square root of 1315011556 is about 36263.0880648629. The cubic root of 1315011556 is about 1095.5777150665.

Adding to 1315011556 its reverse (6551105131), we get a palindrome (7866116687).

The spelling of 1315011556 in words is "one billion, three hundred fifteen million, eleven thousand, five hundred fifty-six".