378132161 has 4 divisors (see below), whose sum is σ = 412507824. Its totient is φ = 343756500.

The previous prime is 378132151. The next prime is 378132163. The reversal of 378132161 is 161231873.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 378132161 - 2²² = 373937857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (378132163) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 17187815 + ... + 17187836.

It is an arithmetic number, because the mean of its divisors is an integer number (103126956).

Almost surely, 2^378132161 is an apocalyptic number.

It is an amenable number.

378132161 is a deficient number, since it is larger than the sum of its proper divisors (34375663).

378132161 is a wasteful number, since it uses less digits than its factorization.

378132161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34375662.

The product of its digits is 6048, while the sum is 32.

The square root of 378132161 is about 19445.6206123641. The cubic root of 378132161 is about 723.1269357861.

The spelling of 378132161 in words is "three hundred seventy-eight million, one hundred thirty-two thousand, one hundred sixty-one".