1380204864 has 42 divisors (see below), whose sum is σ = 3956109690. Its totient is φ = 460068096.

The previous prime is 1380204851. The next prime is 1380204887. The reversal of 1380204864 is 4684020831.

It can be written as a sum of positive squares in only one way, i.e., 751198464 + 629006400 = 27408^2 + 25080^2 .

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1197519 + ... + 1198670.

Almost surely, 2^1380204864 is an apocalyptic number.

It is an amenable number.

1380204864 is an abundant number, since it is smaller than the sum of its proper divisors (2575904826).

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

1380204864 is a wasteful number, since it uses less digits than its factorization.

1380204864 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2396207 (or 2396194 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 36.

The square root of 1380204864 is about 37151.1085164360. The cubic root of 1380204864 is about 1113.3913711921.

It can be divided in two parts, 138020 and 4864, that added together give a square (142884 = 378²).

The spelling of 1380204864 in words is "one billion, three hundred eighty million, two hundred four thousand, eight hundred sixty-four".