1380395264 has 54 divisors (see below), whose sum is σ = 2816424534. Its totient is φ = 675235840.

The previous prime is 1380395243. The next prime is 1380395267. The reversal of 1380395264 is 4625930831.

It can be written as a sum of positive squares in only one way, i.e., 904806400 + 475588864 = 30080^2 + 21808^2 .

It is not an unprimeable number, because it can be changed into a prime (1380395267) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 564284 + ... + 566724.

Almost surely, 2^1380395264 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1380395264, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1408212267).

1380395264 is an abundant number, since it is smaller than the sum of its proper divisors (1436029270).

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

1380395264 is an frugal number, since it uses more digits than its factorization.

1380395264 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2551 (or 2490 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 41.

The square root of 1380395264 is about 37153.6709357232. The cubic root of 1380395264 is about 1113.4425664833.

The spelling of 1380395264 in words is "one billion, three hundred eighty million, three hundred ninety-five thousand, two hundred sixty-four".