1377425917 has 8 divisors (see below), whose sum is σ = 1606328000. Its totient is φ = 1180650492.

The previous prime is 1377425897. The next prime is 1377425941. The reversal of 1377425917 is 7195247731.

It is not a de Polignac number, because 1377425917 - 2²³ = 1369037309 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1377423917) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2007567 + ... + 2008252.

It is an arithmetic number, because the mean of its divisors is an integer number (200791000).

Almost surely, 2^1377425917 is an apocalyptic number.

It is an amenable number.

1377425917 is a deficient number, since it is larger than the sum of its proper divisors (228902083).

1377425917 is an frugal number, since it uses more digits than its factorization.

1377425917 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4015840 (or 4015826 counting only the distinct ones).

The product of its digits is 370440, while the sum is 46.

The square root of 1377425917 is about 37113.6890782902. The cubic root of 1377425917 is about 1112.6436236238.

The spelling of 1377425917 in words is "one billion, three hundred seventy-seven million, four hundred twenty-five thousand, nine hundred seventeen".