381766370 has 32 divisors (see below), whose sum is σ = 712421568. Its totient is φ = 147175488.

The previous prime is 381766369. The next prime is 381766417. The reversal of 381766370 is 73667183.

It is a super-2 number, since 2×381766370² = 291491122525953800, which contains 22 as substring.

It is a Curzon number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 34769 + ... + 44411.

It is an arithmetic number, because the mean of its divisors is an integer number (22263174).

Almost surely, 2^381766370 is an apocalyptic number.

381766370 is a deficient number, since it is larger than the sum of its proper divisors (330655198).

381766370 is a wasteful number, since it uses less digits than its factorization.

381766370 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9794.

The product of its (nonzero) digits is 127008, while the sum is 41.

The square root of 381766370 is about 19538.8425962236. The cubic root of 381766370 is about 725.4361988623.

The spelling of 381766370 in words is "three hundred eighty-one million, seven hundred sixty-six thousand, three hundred seventy".