1649364359 has 4 divisors (see below), whose sum is σ = 1689592800. Its totient is φ = 1609135920.

The previous prime is 1649364349. The next prime is 1649364377. The reversal of 1649364359 is 9534639461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9534639461 = 193 ⋅49402277.

It is a cyclic number.

It is not a de Polignac number, because 1649364359 - 2²⁰ = 1648315783 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649364319) 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, 20114159 + ... + 20114240.

It is an arithmetic number, because the mean of its divisors is an integer number (422398200).

Almost surely, 2^1649364359 is an apocalyptic number.

1649364359 is a deficient number, since it is larger than the sum of its proper divisors (40228441).

1649364359 is an equidigital number, since it uses as much as digits as its factorization.

1649364359 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 40228440.

The product of its digits is 2099520, while the sum is 50.

The square root of 1649364359 is about 40612.3670696501. The cubic root of 1649364359 is about 1181.5139905337.

The spelling of 1649364359 in words is "one billion, six hundred forty-nine million, three hundred sixty-four thousand, three hundred fifty-nine".