3649420919 has 2 divisors, whose sum is σ = 3649420920. Its totient is φ = 3649420918.

The previous prime is 3649420849. The next prime is 3649420921. The reversal of 3649420919 is 9190249463.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 3649420919 - 2²⁸ = 3380985463 is a prime.

It is a super-2 number, since 2×3649420919² = 26636546088069609122, which contains 22 as substring.

Together with 3649420921, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3649420949) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1824710459 + 1824710460.

It is an arithmetic number, because the mean of its divisors is an integer number (1824710460).

Almost surely, 2^3649420919 is an apocalyptic number.

3649420919 is a deficient number, since it is larger than the sum of its proper divisors (1).

3649420919 is an equidigital number, since it uses as much as digits as its factorization.

3649420919 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 419904, while the sum is 47.

The square root of 3649420919 is about 60410.4371694163. The cubic root of 3649420919 is about 1539.6002952936.

The spelling of 3649420919 in words is "three billion, six hundred forty-nine million, four hundred twenty thousand, nine hundred nineteen".