1320992356 has 6 divisors (see below), whose sum is σ = 2311736630. Its totient is φ = 660496176.

The previous prime is 1320992353. The next prime is 1320992363. The reversal of 1320992356 is 6532990231.

It can be written as a sum of positive squares in only one way, i.e., 1015441956 + 305550400 = 31866^2 + 17480^2 .

It is a super-2 number, since 2×1320992356² = 3490041609220861472, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1320992353) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 165124041 + ... + 165124048.

Almost surely, 2^1320992356 is an apocalyptic number.

It is an amenable number.

1320992356 is a deficient number, since it is larger than the sum of its proper divisors (990744274).

1320992356 is a wasteful number, since it uses less digits than its factorization.

1320992356 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 330248093 (or 330248091 counting only the distinct ones).

The product of its (nonzero) digits is 87480, while the sum is 40.

The square root of 1320992356 is about 36345.4585333574. The cubic root of 1320992356 is about 1097.2361345927.

The spelling of 1320992356 in words is "one billion, three hundred twenty million, nine hundred ninety-two thousand, three hundred fifty-six".