3644436377 has 2 divisors, whose sum is σ = 3644436378. Its totient is φ = 3644436376.

The previous prime is 3644436349. The next prime is 3644436401. The reversal of 3644436377 is 7736344463.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3376655881 + 267780496 = 58109^2 + 16364^2 .

It is a cyclic number.

It is not a de Polignac number, because 3644436377 - 2²⁶ = 3577327513 is a prime.

It is a super-2 number, since 2×3644436377² = 26563833012001772258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3644436317) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1822218188 + 1822218189.

It is an arithmetic number, because the mean of its divisors is an integer number (1822218189).

Almost surely, 2^3644436377 is an apocalyptic number.

It is an amenable number.

3644436377 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644436377 is an equidigital number, since it uses as much as digits as its factorization.

3644436377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3048192, while the sum is 47.

The square root of 3644436377 is about 60369.1674366974. The cubic root of 3644436377 is about 1538.8990243174.

The spelling of 3644436377 in words is "three billion, six hundred forty-four million, four hundred thirty-six thousand, three hundred seventy-seven".