363646649 has 2 divisors, whose sum is σ = 363646650. Its totient is φ = 363646648.

The previous prime is 363646639. The next prime is 363646783. The reversal of 363646649 is 946646363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 356001424 + 7645225 = 18868^2 + 2765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-363646649 is a prime.

It is a Chen prime.

It is equal to p_19496279 and since 363646649 and 19496279 have the same sum of digits, it is a Honaker prime.

It is not a weakly prime, because it can be changed into another prime (363646639) 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, 181823324 + 181823325.

It is an arithmetic number, because the mean of its divisors is an integer number (181823325).

Almost surely, 2^363646649 is an apocalyptic number.

It is an amenable number.

363646649 is a deficient number, since it is larger than the sum of its proper divisors (1).

363646649 is an equidigital number, since it uses as much as digits as its factorization.

363646649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1679616, while the sum is 47.

The square root of 363646649 is about 19069.5214675146. The cubic root of 363646649 is about 713.7725850031.

The spelling of 363646649 in words is "three hundred sixty-three million, six hundred forty-six thousand, six hundred forty-nine".