381597157 has 8 divisors (see below), whose sum is σ = 383637312. Its totient is φ = 379562400.

The previous prime is 381597133. The next prime is 381597173. The reversal of 381597157 is 751795183.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381597157 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381597107) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 248482 + ... + 250012.

It is an arithmetic number, because the mean of its divisors is an integer number (47954664).

Almost surely, 2^381597157 is an apocalyptic number.

It is an amenable number.

381597157 is a deficient number, since it is larger than the sum of its proper divisors (2040155).

381597157 is a wasteful number, since it uses less digits than its factorization.

381597157 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2699.

The product of its digits is 264600, while the sum is 46.

The square root of 381597157 is about 19534.5119468084. The cubic root of 381597157 is about 725.3290029558.

The spelling of 381597157 in words is "three hundred eighty-one million, five hundred ninety-seven thousand, one hundred fifty-seven".