378872631 has 12 divisors (see below), whose sum is σ = 547589640. Its totient is φ = 252429840.

The previous prime is 378872609. The next prime is 378872657. The reversal of 378872631 is 136278873.

378872631 is a `hidden beast` number, since 3 + 7 + 8 + 8 + 7 + 2 + 631 = 666.

It is not a de Polignac number, because 378872631 - 2⁷ = 378872503 is a prime.

It is a super-2 number, since 2×378872631² = 287088941041724322, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378872671) 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, 4336 + ... + 27866.

It is an arithmetic number, because the mean of its divisors is an integer number (45632470).

Almost surely, 2^378872631 is an apocalyptic number.

378872631 is a deficient number, since it is larger than the sum of its proper divisors (168717009).

378872631 is a wasteful number, since it uses less digits than its factorization.

378872631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25326 (or 25323 counting only the distinct ones).

The product of its digits is 338688, while the sum is 45.

The square root of 378872631 is about 19464.6508060124. The cubic root of 378872631 is about 723.5986444663.

The spelling of 378872631 in words is "three hundred seventy-eight million, eight hundred seventy-two thousand, six hundred thirty-one".