378840338 has 6 divisors (see below), whose sum is σ = 568301799. Its totient is φ = 189406406.

The previous prime is 378840323. The next prime is 378840349. The reversal of 378840338 is 833048873.

It can be written as a sum of positive squares in only one way, i.e., 189420169 + 189420169 = 13763^2 + 13763^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=13763.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 20645 + ... + 34407.

Almost surely, 2^378840338 is an apocalyptic number.

378840338 is a deficient number, since it is larger than the sum of its proper divisors (189461461).

378840338 is an frugal number, since it uses more digits than its factorization.

378840338 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 27528 (or 13765 counting only the distinct ones).

The product of its (nonzero) digits is 387072, while the sum is 44.

The square root of 378840338 is about 19463.8212589409. The cubic root of 378840338 is about 723.5780853715.

The spelling of 378840338 in words is "three hundred seventy-eight million, eight hundred forty thousand, three hundred thirty-eight".