1379140775 has 12 divisors (see below), whose sum is σ = 1756355592. Its totient is φ = 1073492640.

The previous prime is 1379140771. The next prime is 1379140799. The reversal of 1379140775 is 5770419731.

It is a happy number.

It is not a de Polignac number, because 1379140775 - 2² = 1379140771 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 (1379140771) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 744557 + ... + 746406.

It is an arithmetic number, because the mean of its divisors is an integer number (146362966).

Almost surely, 2^1379140775 is an apocalyptic number.

1379140775 is a deficient number, since it is larger than the sum of its proper divisors (377214817).

1379140775 is a wasteful number, since it uses less digits than its factorization.

1379140775 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1491010 (or 1491005 counting only the distinct ones).

The product of its (nonzero) digits is 185220, while the sum is 44.

The square root of 1379140775 is about 37136.7846615724. The cubic root of 1379140775 is about 1113.1051692090.

The spelling of 1379140775 in words is "one billion, three hundred seventy-nine million, one hundred forty thousand, seven hundred seventy-five".