1377745983 has 32 divisors (see below), whose sum is σ = 2075673600. Its totient is φ = 903016800.

The previous prime is 1377745961. The next prime is 1377746047. The reversal of 1377745983 is 3895477731.

It is not a de Polignac number, because 1377745983 - 2⁵ = 1377745951 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377745913) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 882958 + ... + 884516.

It is an arithmetic number, because the mean of its divisors is an integer number (64864800).

Almost surely, 2^1377745983 is an apocalyptic number.

1377745983 is a deficient number, since it is larger than the sum of its proper divisors (697927617).

1377745983 is a wasteful number, since it uses less digits than its factorization.

1377745983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2100 (or 2094 counting only the distinct ones).

The product of its digits is 4445280, while the sum is 54.

The square root of 1377745983 is about 37118.0007947626. Note that the first 3 decimals coincide. The cubic root of 1377745983 is about 1112.7297968764.

The spelling of 1377745983 in words is "one billion, three hundred seventy-seven million, seven hundred forty-five thousand, nine hundred eighty-three".