1320732955 has 4 divisors (see below), whose sum is σ = 1584879552. Its totient is φ = 1056586360.

The previous prime is 1320732923. The next prime is 1320732991. The reversal of 1320732955 is 5592370231.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5592370231 = 7 ⋅798910033.

It is not a de Polignac number, because 1320732955 - 2⁵ = 1320732923 is a prime.

It is a Duffinian 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, 132073291 + ... + 132073300.

It is an arithmetic number, because the mean of its divisors is an integer number (396219888).

Almost surely, 2^1320732955 is an apocalyptic number.

1320732955 is a deficient number, since it is larger than the sum of its proper divisors (264146597).

1320732955 is an equidigital number, since it uses as much as digits as its factorization.

1320732955 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 264146596.

The product of its (nonzero) digits is 56700, while the sum is 37.

The square root of 1320732955 is about 36341.8898105203. The cubic root of 1320732955 is about 1097.1643090994.

The spelling of 1320732955 in words is "one billion, three hundred twenty million, seven hundred thirty-two thousand, nine hundred fifty-five".