19245064745 has 16 divisors (see below), whose sum is σ = 23729040720. Its totient is φ = 14973122304.

The previous prime is 19245064711. The next prime is 19245064759. The reversal of 19245064745 is 54746054291.

It can be written as a sum of positive squares in 8 ways, for example, as 3431499241 + 15813565504 = 58579^2 + 125752^2 .

It is a cyclic number.

It is not a de Polignac number, because 19245064745 - 2⁶ = 19245064681 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 19245064745.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 404639 + ... + 449691.

It is an arithmetic number, because the mean of its divisors is an integer number (1483065045).

Almost surely, 2^19245064745 is an apocalyptic number.

It is an amenable number.

19245064745 is a deficient number, since it is larger than the sum of its proper divisors (4483975975).

19245064745 is a wasteful number, since it uses less digits than its factorization.

19245064745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 47404.

The product of its (nonzero) digits is 1209600, while the sum is 47.

The spelling of 19245064745 in words is "nineteen billion, two hundred forty-five million, sixty-four thousand, seven hundred forty-five".