1389620988556 has 12 divisors (see below), whose sum is σ = 2436830237968. Its totient is φ = 693383777712.

The previous prime is 1389620988521. The next prime is 1389620988571. The reversal of 1389620988556 is 6558890269831.

It is a happy number.

It is a hoax number, since the sum of its digits (70) coincides with the sum of the digits of its distinct prime factors.

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, 356676951 + ... + 356680846.

Almost surely, 2^{1389620988556} is an apocalyptic number.

It is an amenable number.

1389620988556 is a deficient number, since it is larger than the sum of its proper divisors (1047209249412).

1389620988556 is a wasteful number, since it uses less digits than its factorization.

1389620988556 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 713358288 (or 713358286 counting only the distinct ones).

The product of its (nonzero) digits is 223948800, while the sum is 70.

The spelling of 1389620988556 in words is "one trillion, three hundred eighty-nine billion, six hundred twenty million, nine hundred eighty-eight thousand, five hundred fifty-six".