381924893 has 8 divisors (see below), whose sum is σ = 436786560. Its totient is φ = 327138480.

The previous prime is 381924883. The next prime is 381924931. The reversal of 381924893 is 398429183.

It is a happy number.

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 381924893 - 2²⁰ = 380876317 is a prime.

It is a super-2 number, since 2×381924893² = 291733247786122898, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (381924853) 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, 7478 + ... + 28631.

It is an arithmetic number, because the mean of its divisors is an integer number (54598320).

Almost surely, 2^381924893 is an apocalyptic number.

It is an amenable number.

381924893 is a deficient number, since it is larger than the sum of its proper divisors (54861667).

381924893 is a wasteful number, since it uses less digits than its factorization.

381924893 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37627.

The product of its digits is 373248, while the sum is 47.

The square root of 381924893 is about 19542.8987870275. The cubic root of 381924893 is about 725.5365939539.

The spelling of 381924893 in words is "three hundred eighty-one million, nine hundred twenty-four thousand, eight hundred ninety-three".