378834381 has 16 divisors (see below), whose sum is σ = 562134720. Its totient is φ = 252151920.

The previous prime is 378834371. The next prime is 378834397. The reversal of 378834381 is 183438873.

It is not a de Polignac number, because 378834381 - 2⁶ = 378834317 is a prime.

It is a super-2 number, since 2×378834381² = 287030976455306322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (378834371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6451 + ... + 28271.

It is an arithmetic number, because the mean of its divisors is an integer number (35133420).

Almost surely, 2^378834381 is an apocalyptic number.

It is an amenable number.

378834381 is a deficient number, since it is larger than the sum of its proper divisors (183300339).

378834381 is a wasteful number, since it uses less digits than its factorization.

378834381 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22473 (or 22467 counting only the distinct ones).

The product of its digits is 387072, while the sum is 45.

The square root of 378834381 is about 19463.6682308346. The cubic root of 378834381 is about 723.5742927648.

The spelling of 378834381 in words is "three hundred seventy-eight million, eight hundred thirty-four thousand, three hundred eighty-one".