381660159 has 8 divisors (see below), whose sum is σ = 510773040. Its totient is φ = 253493696.

The previous prime is 381660107. The next prime is 381660161. The reversal of 381660159 is 951066183.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 381660159 - 2⁷ = 381660031 is a prime.

It is a zygodrome in base 4.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381660179) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 235662 + ... + 237275.

It is an arithmetic number, because the mean of its divisors is an integer number (63846630).

Almost surely, 2^381660159 is an apocalyptic number.

381660159 is a deficient number, since it is larger than the sum of its proper divisors (129112881).

381660159 is a wasteful number, since it uses less digits than its factorization.

381660159 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 473209.

The product of its (nonzero) digits is 38880, while the sum is 39.

The square root of 381660159 is about 19536.1244621342. The cubic root of 381660159 is about 725.3689182281.

The spelling of 381660159 in words is "three hundred eighty-one million, six hundred sixty thousand, one hundred fifty-nine".