378149564 has 36 divisors (see below), whose sum is σ = 757084104. Its totient is φ = 164257536.

The previous prime is 378149561. The next prime is 378149567. The reversal of 378149564 is 465941873.

It is an interprime number because it is at equal distance from previous prime (378149561) and next prime (378149567).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378149561) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 2447 + ... + 27609.

It is an arithmetic number, because the mean of its divisors is an integer number (21030114).

Almost surely, 2^378149564 is an apocalyptic number.

378149564 is a gapful number since it is divisible by the number (34) formed by its first and last digit.

It is an amenable number.

378149564 is an abundant number, since it is smaller than the sum of its proper divisors (378934540).

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

378149564 is a wasteful number, since it uses less digits than its factorization.

378149564 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25214 (or 25195 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 378149564 is about 19446.0680858625. The cubic root of 378149564 is about 723.1380292487.

The spelling of 378149564 in words is "three hundred seventy-eight million, one hundred forty-nine thousand, five hundred sixty-four".