1390375790 has 16 divisors (see below), whose sum is σ = 2513609280. Its totient is φ = 553720800.

The previous prime is 1390375781. The next prime is 1390375801. The reversal of 1390375790 is 975730931.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 301286 + ... + 305865.

It is an arithmetic number, because the mean of its divisors is an integer number (157100580).

Almost surely, 2^1390375790 is an apocalyptic number.

1390375790 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1390375790 is a deficient number, since it is larger than the sum of its proper divisors (1123233490).

1390375790 is a wasteful number, since it uses less digits than its factorization.

1390375790 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 607387.

The product of its (nonzero) digits is 178605, while the sum is 44.

The square root of 1390375790 is about 37287.7431604542. The cubic root of 1390375790 is about 1116.1195937105.

The spelling of 1390375790 in words is "one billion, three hundred ninety million, three hundred seventy-five thousand, seven hundred ninety".