3644125291 has 2 divisors, whose sum is σ = 3644125292. Its totient is φ = 3644125290.

The previous prime is 3644125283. The next prime is 3644125357. The reversal of 3644125291 is 1925214463.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3644125291 - 2³ = 3644125283 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 3644125291.

It is not a weakly prime, because it can be changed into another prime (3644125201) 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, 1822062645 + 1822062646.

It is an arithmetic number, because the mean of its divisors is an integer number (1822062646).

Almost surely, 2^3644125291 is an apocalyptic number.

3644125291 is a deficient number, since it is larger than the sum of its proper divisors (1).

3644125291 is an equidigital number, since it uses as much as digits as its factorization.

3644125291 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 51840, while the sum is 37.

The square root of 3644125291 is about 60366.5908512316. The cubic root of 3644125291 is about 1538.8552366994.

The spelling of 3644125291 in words is "three billion, six hundred forty-four million, one hundred twenty-five thousand, two hundred ninety-one".