367816261 has 2 divisors, whose sum is σ = 367816262. Its totient is φ = 367816260.

The previous prime is 367816259. The next prime is 367816321. The reversal of 367816261 is 162618763.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 365536161 + 2280100 = 19119^2 + 1510^2 .

It is a cyclic number.

It is not a de Polignac number, because 367816261 - 2¹ = 367816259 is a prime.

Together with 367816259, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (367816201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 183908130 + 183908131.

It is an arithmetic number, because the mean of its divisors is an integer number (183908131).

Almost surely, 2^367816261 is an apocalyptic number.

It is an amenable number.

367816261 is a deficient number, since it is larger than the sum of its proper divisors (1).

367816261 is an equidigital number, since it uses as much as digits as its factorization.

367816261 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 40.

The square root of 367816261 is about 19178.5364665816. The cubic root of 367816261 is about 716.4902888351.

The spelling of 367816261 in words is "three hundred sixty-seven million, eight hundred sixteen thousand, two hundred sixty-one".