381893923 has 2 divisors, whose sum is σ = 381893924. Its totient is φ = 381893922.

The previous prime is 381893921. The next prime is 381893957. The reversal of 381893923 is 329398183.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 381893923 - 2¹ = 381893921 is a prime.

Together with 381893921, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (381893921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190946961 + 190946962.

It is an arithmetic number, because the mean of its divisors is an integer number (190946962).

Almost surely, 2^381893923 is an apocalyptic number.

381893923 is a deficient number, since it is larger than the sum of its proper divisors (1).

381893923 is an equidigital number, since it uses as much as digits as its factorization.

381893923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 279936, while the sum is 46.

The square root of 381893923 is about 19542.1064115412. The cubic root of 381893923 is about 725.5169823530.

The spelling of 381893923 in words is "three hundred eighty-one million, eight hundred ninety-three thousand, nine hundred twenty-three".