1649612239 has 6 divisors (see below), whose sum is σ = 1813210280. Its totient is φ = 1499647380.

The previous prime is 1649612231. The next prime is 1649612257. The reversal of 1649612239 is 9322169461.

It is not a de Polignac number, because 1649612239 - 2³ = 1649612231 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1649612195 and 1649612204.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649612231) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 6816459 + ... + 6816700.

Almost surely, 2^1649612239 is an apocalyptic number.

1649612239 is a deficient number, since it is larger than the sum of its proper divisors (163598041).

1649612239 is a wasteful number, since it uses less digits than its factorization.

1649612239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13633181 (or 13633170 counting only the distinct ones).

The product of its digits is 139968, while the sum is 43.

The square root of 1649612239 is about 40615.4187347613. The cubic root of 1649612239 is about 1181.5731767723.

The spelling of 1649612239 in words is "one billion, six hundred forty-nine million, six hundred twelve thousand, two hundred thirty-nine".