381763266 has 16 divisors (see below), whose sum is σ = 763845600. Its totient is φ = 127201248.

The previous prime is 381763247. The next prime is 381763273. The reversal of 381763266 is 662367183.

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, 3990 + ... + 27918.

It is an arithmetic number, because the mean of its divisors is an integer number (47740350).

Almost surely, 2^381763266 is an apocalyptic number.

381763266 is an abundant number, since it is smaller than the sum of its proper divisors (382082334).

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

381763266 is a wasteful number, since it uses less digits than its factorization.

381763266 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26593.

The product of its digits is 217728, while the sum is 42.

The square root of 381763266 is about 19538.7631645404. The cubic root of 381763266 is about 725.4342327732.

The spelling of 381763266 in words is "three hundred eighty-one million, seven hundred sixty-three thousand, two hundred sixty-six".