1378877922 has 48 divisors (see below), whose sum is σ = 3300860160. Its totient is φ = 413778816.

The previous prime is 1378877917. The next prime is 1378877933. The reversal of 1378877922 is 2297788731.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 90922 + ... + 104997.

It is an arithmetic number, because the mean of its divisors is an integer number (68767920).

Almost surely, 2^1378877922 is an apocalyptic number.

1378877922 is an abundant number, since it is smaller than the sum of its proper divisors (1921982238).

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

1378877922 is a wasteful number, since it uses less digits than its factorization.

1378877922 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 195967 (or 195964 counting only the distinct ones).

The product of its digits is 2370816, while the sum is 54.

The square root of 1378877922 is about 37133.2455085736. The cubic root of 1378877922 is about 1113.0344484558.

The spelling of 1378877922 in words is "one billion, three hundred seventy-eight million, eight hundred seventy-seven thousand, nine hundred twenty-two".