1389742606 has 12 divisors (see below), whose sum is σ = 2424959208. Its totient is φ = 595603932.

The previous prime is 1389742561. The next prime is 1389742637. The reversal of 1389742606 is 6062479831.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 7090426 + ... + 7090621.

It is an arithmetic number, because the mean of its divisors is an integer number (202079934).

Almost surely, 2^1389742606 is an apocalyptic number.

1389742606 is a deficient number, since it is larger than the sum of its proper divisors (1035216602).

1389742606 is a wasteful number, since it uses less digits than its factorization.

1389742606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14181063 (or 14181056 counting only the distinct ones).

The product of its (nonzero) digits is 435456, while the sum is 46.

The square root of 1389742606 is about 37279.2516824037. The cubic root of 1389742606 is about 1115.9501391931.

The spelling of 1389742606 in words is "one billion, three hundred eighty-nine million, seven hundred forty-two thousand, six hundred six".