17749048889 has 32 divisors (see below), whose sum is σ = 21102541824. Its totient is φ = 14716054080.

The previous prime is 17749048847. The next prime is 17749048909. The reversal of 17749048889 is 98884094771.

It is not a de Polignac number, because 17749048889 - 2⁸ = 17749048633 is a prime.

It is a super-2 number, since 2×17749048889² (a number of 21 digits) contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (17749048829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 8055662 + ... + 8057864.

It is an arithmetic number, because the mean of its divisors is an integer number (659454432).

Almost surely, 2^17749048889 is an apocalyptic number.

It is an amenable number.

17749048889 is a deficient number, since it is larger than the sum of its proper divisors (3353492935).

17749048889 is a wasteful number, since it uses less digits than its factorization.

17749048889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2877.

The product of its (nonzero) digits is 32514048, while the sum is 65.

The spelling of 17749048889 in words is "seventeen billion, seven hundred forty-nine million, forty-eight thousand, eight hundred eighty-nine".