1379644975 has 12 divisors (see below), whose sum is σ = 1711222816. Its totient is φ = 1103417280.

The previous prime is 1379644963. The next prime is 1379645017. The reversal of 1379644975 is 5794469731.

It is not a de Polignac number, because 1379644975 - 2⁵ = 1379644943 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 163459 + ... + 171691.

Almost surely, 2^1379644975 is an apocalyptic number.

1379644975 is a deficient number, since it is larger than the sum of its proper divisors (331577841).

1379644975 is an equidigital number, since it uses as much as digits as its factorization.

1379644975 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14946 (or 14941 counting only the distinct ones).

The product of its digits is 5715360, while the sum is 55.

The square root of 1379644975 is about 37143.5724587714. The cubic root of 1379644975 is about 1113.2407993679.

The spelling of 1379644975 in words is "one billion, three hundred seventy-nine million, six hundred forty-four thousand, nine hundred seventy-five".