1312763772 has 12 divisors (see below), whose sum is σ = 3063115496. Its totient is φ = 437587920.

The previous prime is 1312763701. The next prime is 1312763843. The reversal of 1312763772 is 2773672131.

It is an interprime number because it is at equal distance from previous prime (1312763701) and next prime (1312763843).

It is a tau number, because it is divible by the number of its divisors (12).

It is a self number, because there is not a number n which added to its sum of digits gives 1312763772.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 54698479 + ... + 54698502.

Almost surely, 2^1312763772 is an apocalyptic number.

1312763772 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1312763772 is an abundant number, since it is smaller than the sum of its proper divisors (1750351724).

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

1312763772 is a wasteful number, since it uses less digits than its factorization.

1312763772 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 109396988 (or 109396986 counting only the distinct ones).

The product of its digits is 74088, while the sum is 39.

The square root of 1312763772 is about 36232.0820820444. The cubic root of 1312763772 is about 1094.9531257431.

The spelling of 1312763772 in words is "one billion, three hundred twelve million, seven hundred sixty-three thousand, seven hundred seventy-two".