1351687656 has 32 divisors (see below), whose sum is σ = 3686421600. Its totient is φ = 409602240.

The previous prime is 1351687613. The next prime is 1351687657. The reversal of 1351687656 is 6567861531.

It is not an unprimeable number, because it can be changed into a prime (1351687657) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2559751 + ... + 2560278.

It is an arithmetic number, because the mean of its divisors is an integer number (115200675).

Almost surely, 2^1351687656 is an apocalyptic number.

It is an amenable number.

1351687656 is an abundant number, since it is smaller than the sum of its proper divisors (2334733944).

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

1351687656 is a wasteful number, since it uses less digits than its factorization.

1351687656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5120049 (or 5120045 counting only the distinct ones).

The product of its digits is 907200, while the sum is 48.

The square root of 1351687656 is about 36765.3050578939. The cubic root of 1351687656 is about 1105.6698043215.

The spelling of 1351687656 in words is "one billion, three hundred fifty-one million, six hundred eighty-seven thousand, six hundred fifty-six".