378836631 has 6 divisors (see below), whose sum is σ = 547208480. Its totient is φ = 252557748.

The previous prime is 378836629. The next prime is 378836641. The reversal of 378836631 is 136638873.

378836631 is a `hidden beast` number, since 3 + 7 + 8 + 8 + 3 + 6 + 631 = 666.

It is not a de Polignac number, because 378836631 - 2¹ = 378836629 is a prime.

It is a super-2 number, since 2×378836631² = 287034385974860322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378836641) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21046471 + ... + 21046488.

Almost surely, 2^378836631 is an apocalyptic number.

378836631 is a deficient number, since it is larger than the sum of its proper divisors (168371849).

378836631 is a wasteful number, since it uses less digits than its factorization.

378836631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42092965 (or 42092962 counting only the distinct ones).

The product of its digits is 435456, while the sum is 45.

The square root of 378836631 is about 19463.7260307476. The cubic root of 378836631 is about 723.5757252632.

The spelling of 378836631 in words is "three hundred seventy-eight million, eight hundred thirty-six thousand, six hundred thirty-one".