381997606 has 16 divisors (see below), whose sum is σ = 585208800. Its totient is φ = 186945408.

The previous prime is 381997589. The next prime is 381997607. The reversal of 381997606 is 606799183.

It is a self number, because there is not a number n which added to its sum of digits gives 381997606.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381997607) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 42430 + ... + 50638.

It is an arithmetic number, because the mean of its divisors is an integer number (36575550).

Almost surely, 2^381997606 is an apocalyptic number.

381997606 is a deficient number, since it is larger than the sum of its proper divisors (203211194).

381997606 is a wasteful number, since it uses less digits than its factorization.

381997606 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8703.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 381997606 is about 19544.7590417483. The cubic root of 381997606 is about 725.5826349388.

The spelling of 381997606 in words is "three hundred eighty-one million, nine hundred ninety-seven thousand, six hundred six".