382315861 has 2 divisors, whose sum is σ = 382315862. Its totient is φ = 382315860.

The previous prime is 382315859. The next prime is 382315909. The reversal of 382315861 is 168513283.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 201924100 + 180391761 = 14210^2 + 13431^2 .

It is a cyclic number.

It is not a de Polignac number, because 382315861 - 2¹ = 382315859 is a prime.

Together with 382315859, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 382315861.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (382315841) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 191157930 + 191157931.

It is an arithmetic number, because the mean of its divisors is an integer number (191157931).

Almost surely, 2^382315861 is an apocalyptic number.

It is an amenable number.

382315861 is a deficient number, since it is larger than the sum of its proper divisors (1).

382315861 is an equidigital number, since it uses as much as digits as its factorization.

382315861 is an evil number, because the sum of its binary digits is even.

The product of its digits is 34560, while the sum is 37.

The square root of 382315861 is about 19552.8990433644. The cubic root of 382315861 is about 725.7840814037.

The spelling of 382315861 in words is "three hundred eighty-two million, three hundred fifteen thousand, eight hundred sixty-one".