356636381 has 2 divisors, whose sum is σ = 356636382. Its totient is φ = 356636380.

The previous prime is 356636363. The next prime is 356636383. The reversal of 356636381 is 183636653.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 315240025 + 41396356 = 17755^2 + 6434^2 .

It is a cyclic number.

It is not a de Polignac number, because 356636381 - 2¹⁸ = 356374237 is a prime.

It is a super-2 number, since 2×356636381² = 254379016505554322, which contains 22 as substring.

Together with 356636383, 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 (356636383) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 178318190 + 178318191.

It is an arithmetic number, because the mean of its divisors is an integer number (178318191).

Almost surely, 2^356636381 is an apocalyptic number.

It is an amenable number.

356636381 is a deficient number, since it is larger than the sum of its proper divisors (1).

356636381 is an equidigital number, since it uses as much as digits as its factorization.

356636381 is an evil number, because the sum of its binary digits is even.

The product of its digits is 233280, while the sum is 41.

The square root of 356636381 is about 18884.8187971185. The cubic root of 356636381 is about 709.1561627390.

The spelling of 356636381 in words is "three hundred fifty-six million, six hundred thirty-six thousand, three hundred eighty-one".