381989183 has 2 divisors, whose sum is σ = 381989184. Its totient is φ = 381989182.

The previous prime is 381989143. The next prime is 381989197.

381989183 is nontrivially palindromic in base 10.

It is a strong prime.

It is a palprime.

It is a cyclic number.

It is not a de Polignac number, because 381989183 - 2²⁴ = 365211967 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (381989143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 190994591 + 190994592.

It is an arithmetic number, because the mean of its divisors is an integer number (190994592).

Almost surely, 2^381989183 is an apocalyptic number.

381989183 is a deficient number, since it is larger than the sum of its proper divisors (1).

381989183 is an equidigital number, since it uses as much as digits as its factorization.

381989183 is an evil number, because the sum of its binary digits is even.

The product of its digits is 373248, while the sum is 50.

The square root of 381989183 is about 19544.5435607998. The cubic root of 381989183 is about 725.5773018972.

The spelling of 381989183 in words is "three hundred eighty-one million, nine hundred eighty-nine thousand, one hundred eighty-three".