378452931 has 4 divisors (see below), whose sum is σ = 504603912. Its totient is φ = 252301952.

The previous prime is 378452903. The next prime is 378452941. The reversal of 378452931 is 139254873.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378452931 is a prime.

It is a super-2 number, since 2×378452931² = 286453241964981522, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (378452941) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63075486 + ... + 63075491.

It is an arithmetic number, because the mean of its divisors is an integer number (126150978).

Almost surely, 2^378452931 is an apocalyptic number.

378452931 is a deficient number, since it is larger than the sum of its proper divisors (126150981).

378452931 is a wasteful number, since it uses less digits than its factorization.

378452931 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 126150980.

The product of its digits is 181440, while the sum is 42.

The square root of 378452931 is about 19453.8667364614. The cubic root of 378452931 is about 723.3313544982.

The spelling of 378452931 in words is "three hundred seventy-eight million, four hundred fifty-two thousand, nine hundred thirty-one".