381028190 has 16 divisors (see below), whose sum is σ = 690787440. Its totient is φ = 151314240.

The previous prime is 381028133. The next prime is 381028213. The reversal of 381028190 is 91820183.

It is a super-2 number, since 2×381028190² = 290364963149352200, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 135671 + ... + 138450.

It is an arithmetic number, because the mean of its divisors is an integer number (43174215).

Almost surely, 2^381028190 is an apocalyptic number.

381028190 is a deficient number, since it is larger than the sum of its proper divisors (309759250).

381028190 is a wasteful number, since it uses less digits than its factorization.

381028190 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 274267.

The product of its (nonzero) digits is 3456, while the sum is 32.

The square root of 381028190 is about 19519.9433913114. The cubic root of 381028190 is about 724.9683315537.

The spelling of 381028190 in words is "three hundred eighty-one million, twenty-eight thousand, one hundred ninety".