368255981 has 2 divisors, whose sum is σ = 368255982. Its totient is φ = 368255980.

The previous prime is 368255947. The next prime is 368256001. The reversal of 368255981 is 189552863.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 203518756 + 164737225 = 14266^2 + 12835^2 .

It is a cyclic number.

It is not a de Polignac number, because 368255981 - 2⁶ = 368255917 is a prime.

It is a super-2 number, since 2×368255981² = 271224935084544722, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (368255081) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 184127990 + 184127991.

It is an arithmetic number, because the mean of its divisors is an integer number (184127991).

Almost surely, 2^368255981 is an apocalyptic number.

It is an amenable number.

368255981 is a deficient number, since it is larger than the sum of its proper divisors (1).

368255981 is an equidigital number, since it uses as much as digits as its factorization.

368255981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 518400, while the sum is 47.

The square root of 368255981 is about 19189.9968994265. The cubic root of 368255981 is about 716.7756936946.

The spelling of 368255981 in words is "three hundred sixty-eight million, two hundred fifty-five thousand, nine hundred eighty-one".