381291104 has 24 divisors (see below), whose sum is σ = 761875128. Its totient is φ = 187799040.

The previous prime is 381291077. The next prime is 381291109. The reversal of 381291104 is 401192183.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381291109) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 86777 + ... + 91064.

It is an arithmetic number, because the mean of its divisors is an integer number (31744797).

Almost surely, 2^381291104 is an apocalyptic number.

It is an amenable number.

381291104 is a deficient number, since it is larger than the sum of its proper divisors (380584024).

381291104 is a wasteful number, since it uses less digits than its factorization.

381291104 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 177918 (or 177910 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 29.

The square root of 381291104 is about 19526.6767269805. The cubic root of 381291104 is about 725.1350388175.

The spelling of 381291104 in words is "three hundred eighty-one million, two hundred ninety-one thousand, one hundred four".