1392743644 has 12 divisors (see below), whose sum is σ = 2455092864. Its totient is φ = 691288544.

The previous prime is 1392743629. The next prime is 1392743657. The reversal of 1392743644 is 4463472931.

It is a self number, because there is not a number n which added to its sum of digits gives 1392743644.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1270204 + ... + 1271299.

It is an arithmetic number, because the mean of its divisors is an integer number (204591072).

Almost surely, 2^1392743644 is an apocalyptic number.

It is an amenable number.

1392743644 is a deficient number, since it is larger than the sum of its proper divisors (1062349220).

1392743644 is a wasteful number, since it uses less digits than its factorization.

1392743644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541644 (or 2541642 counting only the distinct ones).

The product of its digits is 435456, while the sum is 43.

The square root of 1392743644 is about 37319.4807573739. The cubic root of 1392743644 is about 1116.7528300435.

The spelling of 1392743644 in words is "one billion, three hundred ninety-two million, seven hundred forty-three thousand, six hundred forty-four".