381372001 has 4 divisors (see below), whose sum is σ = 381475332. Its totient is φ = 381268672.

The previous prime is 381371989. The next prime is 381372007. The reversal of 381372001 is 100273183.

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

It can be written as a sum of positive squares in 2 ways, for example, as 148840000 + 232532001 = 12200^2 + 15249^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-381372001 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381372007) 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, 45916 + ... + 53581.

It is an arithmetic number, because the mean of its divisors is an integer number (95368833).

Almost surely, 2^381372001 is an apocalyptic number.

It is an amenable number.

381372001 is a deficient number, since it is larger than the sum of its proper divisors (103331).

381372001 is an equidigital number, since it uses as much as digits as its factorization.

381372001 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 103330.

The product of its (nonzero) digits is 1008, while the sum is 25.

The square root of 381372001 is about 19528.7480653523. The cubic root of 381372001 is about 725.1863181860.

The spelling of 381372001 in words is "three hundred eighty-one million, three hundred seventy-two thousand, one".