381897167 has 4 divisors (see below), whose sum is σ = 382140000. Its totient is φ = 381654336.

The previous prime is 381897151. The next prime is 381897179. The reversal of 381897167 is 761798183.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 381897167 - 2⁴ = 381897151 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 (381897067) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 119042 + ... + 122207.

It is an arithmetic number, because the mean of its divisors is an integer number (95535000).

Almost surely, 2^381897167 is an apocalyptic number.

381897167 is a deficient number, since it is larger than the sum of its proper divisors (242833).

381897167 is a wasteful number, since it uses less digits than its factorization.

381897167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242832.

The product of its digits is 508032, while the sum is 50.

The square root of 381897167 is about 19542.1894116294. The cubic root of 381897167 is about 725.5190366499.

The spelling of 381897167 in words is "three hundred eighty-one million, eight hundred ninety-seven thousand, one hundred sixty-seven".