378955986 has 16 divisors (see below), whose sum is σ = 760337184. Its totient is φ = 125914464.

The previous prime is 378955957. The next prime is 378955991. The reversal of 378955986 is 689559873.

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, 99016 + ... + 102771.

It is an arithmetic number, because the mean of its divisors is an integer number (47521074).

Almost surely, 2^378955986 is an apocalyptic number.

378955986 is an abundant number, since it is smaller than the sum of its proper divisors (381381198).

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

378955986 is a wasteful number, since it uses less digits than its factorization.

378955986 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202105.

The product of its digits is 16329600, while the sum is 60.

The square root of 378955986 is about 19466.7918774512. The cubic root of 378955986 is about 723.6517063991.

The spelling of 378955986 in words is "three hundred seventy-eight million, nine hundred fifty-five thousand, nine hundred eighty-six".