366935981 has 2 divisors, whose sum is σ = 366935982. Its totient is φ = 366935980.

The previous prime is 366935977. The next prime is 366936029. The reversal of 366935981 is 189539663.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 192959881 + 173976100 = 13891^2 + 13190^2 .

It is a cyclic number.

It is not a de Polignac number, because 366935981 - 2² = 366935977 is a prime.

It is a super-2 number, since 2×366935981² = 269284028304864722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (366935911) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183467990 + 183467991.

It is an arithmetic number, because the mean of its divisors is an integer number (183467991).

Almost surely, 2^366935981 is an apocalyptic number.

It is an amenable number.

366935981 is a deficient number, since it is larger than the sum of its proper divisors (1).

366935981 is an equidigital number, since it uses as much as digits as its factorization.

366935981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1049760, while the sum is 50.

The square root of 366935981 is about 19155.5731054960. The cubic root of 366935981 is about 715.9182496939.

The spelling of 366935981 in words is "three hundred sixty-six million, nine hundred thirty-five thousand, nine hundred eighty-one".