9745281631749 has 16 divisors (see below), whose sum is σ = 13051338959808. Its totient is φ = 6468041069952.

The previous prime is 9745281631733. The next prime is 9745281631753. The reversal of 9745281631749 is 9471361825479.

It is not a de Polignac number, because 9745281631749 - 2⁴ = 9745281631733 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 9745281631749.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9745281631049) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 24795679 + ... + 25185635.

It is an arithmetic number, because the mean of its divisors is an integer number (815708684988).

Almost surely, 2^{9745281631749} is an apocalyptic number.

It is an amenable number.

9745281631749 is a deficient number, since it is larger than the sum of its proper divisors (3306057328059).

9745281631749 is a wasteful number, since it uses less digits than its factorization.

9745281631749 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 426884.

The product of its digits is 91445760, while the sum is 66.

The spelling of 9745281631749 in words is "nine trillion, seven hundred forty-five billion, two hundred eighty-one million, six hundred thirty-one thousand, seven hundred forty-nine".