1649902653 has 12 divisors (see below), whose sum is σ = 2723648928. Its totient is φ = 942801480.

The previous prime is 1649902643. The next prime is 1649902669. The reversal of 1649902653 is 3562099461.

It is not a de Polignac number, because 1649902653 - 2⁵ = 1649902621 is a prime.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 1649902599 and 1649902608.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1649902603) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 13094403 + ... + 13094528.

It is an arithmetic number, because the mean of its divisors is an integer number (226970744).

Almost surely, 2^1649902653 is an apocalyptic number.

It is an amenable number.

1649902653 is a deficient number, since it is larger than the sum of its proper divisors (1073746275).

1649902653 is a wasteful number, since it uses less digits than its factorization.

1649902653 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 26188944 (or 26188941 counting only the distinct ones).

The product of its (nonzero) digits is 349920, while the sum is 45.

The square root of 1649902653 is about 40618.9937467683. The cubic root of 1649902653 is about 1181.6425113002.

The spelling of 1649902653 in words is "one billion, six hundred forty-nine million, nine hundred two thousand, six hundred fifty-three".