1389795564 has 24 divisors (see below), whose sum is σ = 3243939328. Its totient is φ = 463110480.

The previous prime is 1389795529. The next prime is 1389795569. The reversal of 1389795564 is 4655979831.

It is not an unprimeable number, because it can be changed into a prime (1389795569) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21549 + ... + 56955.

Almost surely, 2^1389795564 is an apocalyptic number.

It is an amenable number.

1389795564 is an abundant number, since it is smaller than the sum of its proper divisors (1854143764).

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

1389795564 is a wasteful number, since it uses less digits than its factorization.

1389795564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38685 (or 38683 counting only the distinct ones).

The product of its digits is 8164800, while the sum is 57.

The square root of 1389795564 is about 37279.9619634999. The cubic root of 1389795564 is about 1115.9643139371.

It can be divided in two parts, 1389 and 795564, that added together give a triangular number (796953 = T₁₂₆₂).

The spelling of 1389795564 in words is "one billion, three hundred eighty-nine million, seven hundred ninety-five thousand, five hundred sixty-four".