3649212191 has 2 divisors, whose sum is σ = 3649212192. Its totient is φ = 3649212190.

The previous prime is 3649212173. The next prime is 3649212221. The reversal of 3649212191 is 1912129463.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3649212191 is a prime.

It is a super-2 number, since 2×3649212191² = 26633499229886040962, which contains 22 as substring.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3649262191) 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, 1824606095 + 1824606096.

It is an arithmetic number, because the mean of its divisors is an integer number (1824606096).

Almost surely, 2^3649212191 is an apocalyptic number.

3649212191 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649212191 is an equidigital number, since it uses as much as digits as its factorization.

3649212191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 38.

The square root of 3649212191 is about 60408.7095624464. The cubic root of 3649212191 is about 1539.5709423429.

The spelling of 3649212191 in words is "three billion, six hundred forty-nine million, two hundred twelve thousand, one hundred ninety-one".