371972161 has 8 divisors (see below), whose sum is σ = 407288448. Its totient is φ = 336906000.

The previous prime is 371972143. The next prime is 371972269. The reversal of 371972161 is 161279173.

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 371972161 - 2⁵ = 371972129 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 371972161.

It is not an unprimeable number, because it can be changed into a prime (371972761) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 59410 + ... + 65371.

It is an arithmetic number, because the mean of its divisors is an integer number (50911056).

Almost surely, 2^371972161 is an apocalyptic number.

It is an amenable number.

371972161 is a deficient number, since it is larger than the sum of its proper divisors (35316287).

371972161 is a wasteful number, since it uses less digits than its factorization.

371972161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 125063.

The product of its digits is 15876, while the sum is 37.

The square root of 371972161 is about 19286.5798160275. The cubic root of 371972161 is about 719.1786937623.

The spelling of 371972161 in words is "three hundred seventy-one million, nine hundred seventy-two thousand, one hundred sixty-one".