1389661132 has 24 divisors (see below), whose sum is σ = 2473777152. Its totient is φ = 682928400.

The previous prime is 1389661099. The next prime is 1389661151. The reversal of 1389661132 is 2311669831.

It is a hoax number, since the sum of its digits (40) 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 7 ways as a sum of consecutive naturals, for example, 86613 + ... + 101395.

It is an arithmetic number, because the mean of its divisors is an integer number (103074048).

Almost surely, 2^1389661132 is an apocalyptic number.

It is an amenable number.

1389661132 is a deficient number, since it is larger than the sum of its proper divisors (1084116020).

1389661132 is a wasteful number, since it uses less digits than its factorization.

1389661132 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15189 (or 15187 counting only the distinct ones).

The product of its digits is 46656, while the sum is 40.

The square root of 1389661132 is about 37278.1589137661. The cubic root of 1389661132 is about 1115.9283311504.

The spelling of 1389661132 in words is "one billion, three hundred eighty-nine million, six hundred sixty-one thousand, one hundred thirty-two".