19491890282 has 16 divisors (see below), whose sum is σ = 29926881600. Its totient is φ = 9516400992.

The previous prime is 19491890273. The next prime is 19491890291. The reversal of 19491890282 is 28209819491.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (19491890273) and next prime (19491890291).

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 265094 + ... + 330542.

It is an arithmetic number, because the mean of its divisors is an integer number (1870430100).

Almost surely, 2^19491890282 is an apocalyptic number.

19491890282 is a deficient number, since it is larger than the sum of its proper divisors (10434991318).

19491890282 is a wasteful number, since it uses less digits than its factorization.

19491890282 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 68957.

The product of its (nonzero) digits is 746496, while the sum is 53.

The spelling of 19491890282 in words is "nineteen billion, four hundred ninety-one million, eight hundred ninety thousand, two hundred eighty-two".