381662330 has 32 divisors (see below), whose sum is σ = 812211840. Its totient is φ = 126342720.

The previous prime is 381662287. The next prime is 381662339. The reversal of 381662330 is 33266183.

It is a super-2 number, since 2×381662330² = 291332268282057800, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (381662339) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 91976 + ... + 96035.

It is an arithmetic number, because the mean of its divisors is an integer number (25381620).

Almost surely, 2^381662330 is an apocalyptic number.

381662330 is an abundant number, since it is smaller than the sum of its proper divisors (430549510).

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

381662330 is a wasteful number, since it uses less digits than its factorization.

381662330 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188054.

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 381662330 is about 19536.1800257881. The cubic root of 381662330 is about 725.3702935990.

The spelling of 381662330 in words is "three hundred eighty-one million, six hundred sixty-two thousand, three hundred thirty".