1320377508 has 18 divisors (see below), whose sum is σ = 3337621014. Its totient is φ = 440125824.

The previous prime is 1320377477. The next prime is 1320377549. The reversal of 1320377508 is 8057730231.

1320377508 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in only one way, i.e., 1056380004 + 263997504 = 32502^2 + 16248^2 .

It is a tau number, because it is divible by the number of its divisors (18).

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 36677153 = 1320377508 / (1 + 3 + 2 + 0 + 3 + 7 + 7 + 5 + 0 + 8).

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 18338541 + ... + 18338612.

Almost surely, 2^1320377508 is an apocalyptic number.

1320377508 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1320377508 is an abundant number, since it is smaller than the sum of its proper divisors (2017243506).

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

1320377508 is a wasteful number, since it uses less digits than its factorization.

1320377508 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36677163 (or 36677158 counting only the distinct ones).

The product of its (nonzero) digits is 35280, while the sum is 36.

The square root of 1320377508 is about 36336.9991606352. Note that the first 3 decimals coincide. The cubic root of 1320377508 is about 1097.0658741732.

The spelling of 1320377508 in words is "one billion, three hundred twenty million, three hundred seventy-seven thousand, five hundred eight".