1320377499 has 48 divisors (see below), whose sum is σ = 2251634112. Its totient is φ = 729990144.

The previous prime is 1320377477. The next prime is 1320377549. The reversal of 1320377499 is 9947730231.

It is not a de Polignac number, because 1320377499 - 2¹⁶ = 1320311963 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (1320377419) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 241039 + ... + 246455.

It is an arithmetic number, because the mean of its divisors is an integer number (46909044).

Almost surely, 2^1320377499 is an apocalyptic number.

1320377499 is a deficient number, since it is larger than the sum of its proper divisors (931256613).

1320377499 is a wasteful number, since it uses less digits than its factorization.

1320377499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5556 (or 5553 counting only the distinct ones).

The product of its (nonzero) digits is 285768, while the sum is 45.

The square root of 1320377499 is about 36336.9990367944. Note that the first 3 decimals coincide. The cubic root of 1320377499 is about 1097.0658716806.

The spelling of 1320377499 in words is "one billion, three hundred twenty million, three hundred seventy-seven thousand, four hundred ninety-nine".