381834100 has 18 divisors (see below), whose sum is σ = 828580214. Its totient is φ = 152733600.

The previous prime is 381834091. The next prime is 381834121. The reversal of 381834100 is 1438183.

It can be written as a sum of positive squares in 3 ways, for example, as 134652816 + 247181284 = 11604^2 + 15722^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 1909071 + ... + 1909270.

Almost surely, 2^381834100 is an apocalyptic number.

It is an amenable number.

381834100 is an abundant number, since it is smaller than the sum of its proper divisors (446746114).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

381834100 is a wasteful number, since it uses less digits than its factorization.

381834100 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3818355 (or 3818348 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 381834100 is about 19540.5757335857. The cubic root of 381834100 is about 725.4790967288.

The spelling of 381834100 in words is "three hundred eighty-one million, eight hundred thirty-four thousand, one hundred".