381338651 has 8 divisors (see below), whose sum is σ = 385831680. Its totient is φ = 376861032.

The previous prime is 381338647. The next prime is 381338681. The reversal of 381338651 is 156833183.

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 381338651 - 2² = 381338647 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (381338681) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 50330 + ... + 57408.

It is an arithmetic number, because the mean of its divisors is an integer number (48228960).

Almost surely, 2^381338651 is an apocalyptic number.

381338651 is a deficient number, since it is larger than the sum of its proper divisors (4493029).

381338651 is a wasteful number, since it uses less digits than its factorization.

381338651 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7705.

The product of its digits is 51840, while the sum is 38.

The square root of 381338651 is about 19527.8941773044. The cubic root of 381338651 is about 725.1651790107.

The spelling of 381338651 in words is "three hundred eighty-one million, three hundred thirty-eight thousand, six hundred fifty-one".