381649622 has 12 divisors (see below), whose sum is σ = 579003036. Its totient is φ = 188672880.

The previous prime is 381649613. The next prime is 381649627. The reversal of 381649622 is 226946183.

It is a self number, because there is not a number n which added to its sum of digits gives 381649622.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381649627) by changing a digit.

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 5 ways as a sum of consecutive naturals, for example, 3797 + ... + 27887.

It is an arithmetic number, because the mean of its divisors is an integer number (48250253).

Almost surely, 2^381649622 is an apocalyptic number.

381649622 is a deficient number, since it is larger than the sum of its proper divisors (197353414).

381649622 is an equidigital number, since it uses as much as digits as its factorization.

381649622 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24271 (or 24182 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 381649622 is about 19535.8547803775. The cubic root of 381649622 is about 725.3622427582.

The spelling of 381649622 in words is "three hundred eighty-one million, six hundred forty-nine thousand, six hundred twenty-two".