381911359 has 4 divisors (see below), whose sum is σ = 386745760. Its totient is φ = 377076960.

The previous prime is 381911347. The next prime is 381911393. The reversal of 381911359 is 953119183.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 953119183 = 2213 ⋅430691.

It is a cyclic number.

It is not a de Polignac number, because 381911359 - 2²¹ = 379814207 is a prime.

It is a super-2 number, since 2×381911359² = 291712572266453762, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381912359) 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, 2417082 + ... + 2417239.

It is an arithmetic number, because the mean of its divisors is an integer number (96686440).

Almost surely, 2^381911359 is an apocalyptic number.

381911359 is a deficient number, since it is larger than the sum of its proper divisors (4834401).

381911359 is an equidigital number, since it uses as much as digits as its factorization.

381911359 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4834400.

The product of its digits is 29160, while the sum is 40.

The square root of 381911359 is about 19542.5525200778. The cubic root of 381911359 is about 725.5280237451.

The spelling of 381911359 in words is "three hundred eighty-one million, nine hundred eleven thousand, three hundred fifty-nine".