1380288878 has 8 divisors (see below), whose sum is σ = 2073891600. Its totient is φ = 688991680.

The previous prime is 1380288853. The next prime is 1380288881. The reversal of 1380288878 is 8788820831.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 574883 + ... + 577278.

It is an arithmetic number, because the mean of its divisors is an integer number (259236450).

Almost surely, 2^1380288878 is an apocalyptic number.

1380288878 is a deficient number, since it is larger than the sum of its proper divisors (693602722).

1380288878 is a wasteful number, since it uses less digits than its factorization.

1380288878 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1152762.

The product of its (nonzero) digits is 1376256, while the sum is 53.

The square root of 1380288878 is about 37152.2392057329. The cubic root of 1380288878 is about 1113.4139616947.

The spelling of 1380288878 in words is "one billion, three hundred eighty million, two hundred eighty-eight thousand, eight hundred seventy-eight".