378193631 has 8 divisors (see below), whose sum is σ = 386622720. Its totient is φ = 369780568.

The previous prime is 378193609. The next prime is 378193661. The reversal of 378193631 is 136391873.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-378193631 is a prime.

It is a super-2 number, since 2×378193631² = 286060845057928322, 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 (378193601) 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 7 ways as a sum of consecutive naturals, for example, 52400 + ... + 59178.

It is an arithmetic number, because the mean of its divisors is an integer number (48327840).

Almost surely, 2^378193631 is an apocalyptic number.

378193631 is a deficient number, since it is larger than the sum of its proper divisors (8429089).

378193631 is a wasteful number, since it uses less digits than its factorization.

378193631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8013.

The product of its digits is 81648, while the sum is 41.

The square root of 378193631 is about 19447.2011096713. The cubic root of 378193631 is about 723.1661180340.

The spelling of 378193631 in words is "three hundred seventy-eight million, one hundred ninety-three thousand, six hundred thirty-one".