1378958256 has 100 divisors (see below), whose sum is σ = 4298165872. Its totient is φ = 424289664.

The previous prime is 1378958201. The next prime is 1378958267. The reversal of 1378958256 is 6528598731.

1378958256 is a `hidden beast` number, since 1 + 3 + 7 + 8 + 9 + 582 + 56 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 24076 + ... + 57771.

Almost surely, 2^1378958256 is an apocalyptic number.

1378958256 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

1378958256 is an abundant number, since it is smaller than the sum of its proper divisors (2919207616).

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

1378958256 is a wasteful number, since it uses less digits than its factorization.

1378958256 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81880 (or 81865 counting only the distinct ones).

The product of its digits is 3628800, while the sum is 54.

The square root of 1378958256 is about 37134.3271919662. The cubic root of 1378958256 is about 1113.0560633190.

The spelling of 1378958256 in words is "one billion, three hundred seventy-eight million, nine hundred fifty-eight thousand, two hundred fifty-six".