378890164 has 6 divisors (see below), whose sum is σ = 663057794. Its totient is φ = 189445080.

The previous prime is 378890147. The next prime is 378890167. The reversal of 378890164 is 461098873.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 340697764 + 38192400 = 18458^2 + 6180^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378890167) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 47361267 + ... + 47361274.

Almost surely, 2^378890164 is an apocalyptic number.

It is an amenable number.

378890164 is a deficient number, since it is larger than the sum of its proper divisors (284167630).

378890164 is a wasteful number, since it uses less digits than its factorization.

378890164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 94722545 (or 94722543 counting only the distinct ones).

The product of its (nonzero) digits is 290304, while the sum is 46.

The square root of 378890164 is about 19465.1011813450. The cubic root of 378890164 is about 723.6098062291.

The spelling of 378890164 in words is "three hundred seventy-eight million, eight hundred ninety thousand, one hundred sixty-four".