17894896493 has 16 divisors (see below), whose sum is σ = 18286482480. Its totient is φ = 17508096000.

The previous prime is 17894896489. The next prime is 17894896501. The reversal of 17894896493 is 39469849871.

It can be written as a sum of positive squares in 8 ways, for example, as 5423144164 + 12471752329 = 73642^2 + 111677^2 .

It is a cyclic number.

It is not a de Polignac number, because 17894896493 - 2² = 17894896489 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (17894896423) 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 15 ways as a sum of consecutive naturals, for example, 10001843 + ... + 10003631.

It is an arithmetic number, because the mean of its divisors is an integer number (1142905155).

Almost surely, 2^17894896493 is an apocalyptic number.

It is an amenable number.

17894896493 is a deficient number, since it is larger than the sum of its proper divisors (391585987).

17894896493 is a wasteful number, since it uses less digits than its factorization.

17894896493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3008.

The product of its digits is 94058496, while the sum is 68.

The spelling of 17894896493 in words is "seventeen billion, eight hundred ninety-four million, eight hundred ninety-six thousand, four hundred ninety-three".