2253756649 has 4 divisors (see below), whose sum is σ = 2372375440. Its totient is φ = 2135137860.

The previous prime is 2253756629. The next prime is 2253756707. The reversal of 2253756649 is 9466573522.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2253756649 - 2⁹ = 2253756137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2253756629) 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, 59309367 + ... + 59309404.

It is an arithmetic number, because the mean of its divisors is an integer number (593093860).

Almost surely, 2^2253756649 is an apocalyptic number.

It is an amenable number.

2253756649 is a deficient number, since it is larger than the sum of its proper divisors (118618791).

2253756649 is a wasteful number, since it uses less digits than its factorization.

2253756649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 118618790.

The product of its digits is 2721600, while the sum is 49.

The square root of 2253756649 is about 47473.7469450222. The cubic root of 2253756649 is about 1311.0995660939.

The spelling of 2253756649 in words is "two billion, two hundred fifty-three million, seven hundred fifty-six thousand, six hundred forty-nine".