1389952194 has 32 divisors (see below), whose sum is σ = 2883409920. Its totient is φ = 446151552.

The previous prime is 1389952153. The next prime is 1389952211. The reversal of 1389952194 is 4912599831.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 56214 + ... + 77070.

It is an arithmetic number, because the mean of its divisors is an integer number (90106560).

Almost surely, 2^1389952194 is an apocalyptic number.

1389952194 is an abundant number, since it is smaller than the sum of its proper divisors (1493457726).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1389952194 is a wasteful number, since it uses less digits than its factorization.

1389952194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21274.

The product of its digits is 699840, while the sum is 51.

The square root of 1389952194 is about 37282.0626307075. The cubic root of 1389952194 is about 1116.0062354323.

The spelling of 1389952194 in words is "one billion, three hundred eighty-nine million, nine hundred fifty-two thousand, one hundred ninety-four".