378781970 has 16 divisors (see below), whose sum is σ = 779208768. Its totient is φ = 129868080.

The previous prime is 378781951. The next prime is 378781999. The reversal of 378781970 is 79187873.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2705516 + ... + 2705655.

It is an arithmetic number, because the mean of its divisors is an integer number (48700548).

Almost surely, 2^378781970 is an apocalyptic number.

378781970 is an abundant number, since it is smaller than the sum of its proper divisors (400426798).

378781970 is a wasteful number, since it uses less digits than its factorization.

378781970 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5411185.

The product of its (nonzero) digits is 592704, while the sum is 50.

The square root of 378781970 is about 19462.3218039370. The cubic root of 378781970 is about 723.5409228604.

The spelling of 378781970 in words is "three hundred seventy-eight million, seven hundred eighty-one thousand, nine hundred seventy".