7253739649 has 16 divisors (see below), whose sum is σ = 8227098880. Its totient is φ = 6340083840.

The previous prime is 7253739641. The next prime is 7253739659. The reversal of 7253739649 is 9469373527.

It is a cyclic number.

It is not a de Polignac number, because 7253739649 - 2³ = 7253739641 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 7253739649.

It is not an unprimeable number, because it can be changed into a prime (7253739641) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 558469 + ... + 571309.

It is an arithmetic number, because the mean of its divisors is an integer number (514193680).

Almost surely, 2^7253739649 is an apocalyptic number.

It is an amenable number.

7253739649 is a deficient number, since it is larger than the sum of its proper divisors (973359231).

7253739649 is a wasteful number, since it uses less digits than its factorization.

7253739649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15160.

The product of its digits is 8573040, while the sum is 55.

The square root of 7253739649 is about 85168.8889736152. Note that the first 3 decimals coincide. The cubic root of 7253739649 is about 1935.7710382851.

The spelling of 7253739649 in words is "seven billion, two hundred fifty-three million, seven hundred thirty-nine thousand, six hundred forty-nine".