3649420319 has 4 divisors (see below), whose sum is σ = 3650325240. Its totient is φ = 3648515400.

The previous prime is 3649420289. The next prime is 3649420321. The reversal of 3649420319 is 9130249463.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9130249463 = 37 ⋅246763499.

It is a cyclic number.

It is not a de Polignac number, because 3649420319 - 2²⁸ = 3380984863 is a prime.

It is a super-2 number, since 2×3649420319² = 26636537329460123522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3649420919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 446384 + ... + 454485.

It is an arithmetic number, because the mean of its divisors is an integer number (912581310).

Almost surely, 2^3649420319 is an apocalyptic number.

3649420319 is a deficient number, since it is larger than the sum of its proper divisors (904921).

3649420319 is an equidigital number, since it uses as much as digits as its factorization.

3649420319 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 904920.

The product of its (nonzero) digits is 139968, while the sum is 41.

The square root of 3649420319 is about 60410.4322033869. The cubic root of 3649420319 is about 1539.6002109185.

The spelling of 3649420319 in words is "three billion, six hundred forty-nine million, four hundred twenty thousand, three hundred nineteen".