381935263 has 4 divisors (see below), whose sum is σ = 398541168. Its totient is φ = 365329360.

The previous prime is 381935233. The next prime is 381935293. The reversal of 381935263 is 362539183.

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

It is an interprime number because it is at equal distance from previous prime (381935233) and next prime (381935293).

It is a cyclic number.

It is not a de Polignac number, because 381935263 - 2²¹ = 379838111 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381935233) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 8302918 + ... + 8302963.

It is an arithmetic number, because the mean of its divisors is an integer number (99635292).

Almost surely, 2^381935263 is an apocalyptic number.

381935263 is a deficient number, since it is larger than the sum of its proper divisors (16605905).

381935263 is a wasteful number, since it uses less digits than its factorization.

381935263 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16605904.

The product of its digits is 116640, while the sum is 40.

The square root of 381935263 is about 19543.1640989887. The cubic root of 381935263 is about 725.5431604687.

The spelling of 381935263 in words is "three hundred eighty-one million, nine hundred thirty-five thousand, two hundred sixty-three".