382274021 has 2 divisors, whose sum is σ = 382274022. Its totient is φ = 382274020.

The previous prime is 382273987. The next prime is 382274023. The reversal of 382274021 is 120472283.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 248409121 + 133864900 = 15761^2 + 11570^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-382274021 is a prime.

It is a super-2 number, since 2×382274021² = 292266854263016882, which contains 22 as substring.

Together with 382274023, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382274023) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191137010 + 191137011.

It is an arithmetic number, because the mean of its divisors is an integer number (191137011).

Almost surely, 2^382274021 is an apocalyptic number.

It is an amenable number.

382274021 is a deficient number, since it is larger than the sum of its proper divisors (1).

382274021 is an equidigital number, since it uses as much as digits as its factorization.

382274021 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5376, while the sum is 29.

The square root of 382274021 is about 19551.8290960207. The cubic root of 382274021 is about 725.7576042445.

The spelling of 382274021 in words is "three hundred eighty-two million, two hundred seventy-four thousand, twenty-one".