381935190 has 128 divisors (see below), whose sum is σ = 1164828672. Its totient is φ = 77967360.

The previous prime is 381935189. The next prime is 381935233. The reversal of 381935190 is 91539183.

It is a super-2 number, since 2×381935190² = 291748978720672200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39).

It is a congruent number.

It is an unprimeable number.

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 63 ways as a sum of consecutive naturals, for example, 82374 + ... + 86886.

It is an arithmetic number, because the mean of its divisors is an integer number (9100224).

Almost surely, 2^381935190 is an apocalyptic number.

381935190 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 381935190, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (582414336).

381935190 is an abundant number, since it is smaller than the sum of its proper divisors (782893482).

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

381935190 is a wasteful number, since it uses less digits than its factorization.

381935190 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4574.

The product of its (nonzero) digits is 29160, while the sum is 39.

The square root of 381935190 is about 19543.1622313279. The cubic root of 381935190 is about 725.5431142439.

The spelling of 381935190 in words is "three hundred eighty-one million, nine hundred thirty-five thousand, one hundred ninety".