365640349 has 2 divisors, whose sum is σ = 365640350. Its totient is φ = 365640348.

The previous prime is 365640347. The next prime is 365640367. The reversal of 365640349 is 943046563.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 206123449 + 159516900 = 14357^2 + 12630^2 .

It is a cyclic number.

It is not a de Polignac number, because 365640349 - 2¹ = 365640347 is a prime.

Together with 365640347, it forms a pair of twin primes.

It is equal to p_19597432 and since 365640349 and 19597432 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (365640343) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 182820174 + 182820175.

It is an arithmetic number, because the mean of its divisors is an integer number (182820175).

Almost surely, 2^365640349 is an apocalyptic number.

It is an amenable number.

365640349 is a deficient number, since it is larger than the sum of its proper divisors (1).

365640349 is an equidigital number, since it uses as much as digits as its factorization.

365640349 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 233280, while the sum is 40.

The square root of 365640349 is about 19121.7245299685. The cubic root of 365640349 is about 715.0746325342.

The spelling of 365640349 in words is "three hundred sixty-five million, six hundred forty thousand, three hundred forty-nine".