378690807 has 16 divisors (see below), whose sum is σ = 552930048. Its totient is φ = 228631680.

The previous prime is 378690799. The next prime is 378690821. The reversal of 378690807 is 708096873.

It is not a de Polignac number, because 378690807 - 2³ = 378690799 is a prime.

It is a super-2 number, since 2×378690807² = 286813454612622498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378690847) 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 15 ways as a sum of consecutive naturals, for example, 13138 + ... + 30495.

It is an arithmetic number, because the mean of its divisors is an integer number (34558128).

Almost surely, 2^378690807 is an apocalyptic number.

378690807 is a deficient number, since it is larger than the sum of its proper divisors (174239241).

378690807 is a wasteful number, since it uses less digits than its factorization.

378690807 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43910.

The product of its (nonzero) digits is 508032, while the sum is 48.

The square root of 378690807 is about 19459.9796248609. The cubic root of 378690807 is about 723.4828723558.

The spelling of 378690807 in words is "three hundred seventy-eight million, six hundred ninety thousand, eight hundred seven".