19892818027 has 2 divisors, whose sum is σ = 19892818028. Its totient is φ = 19892818026.

The previous prime is 19892817991. The next prime is 19892818093. The reversal of 19892818027 is 72081829891.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-19892818027 is a prime.

It is not a weakly prime, because it can be changed into another prime (19892818097) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 9946409013 + 9946409014.

It is an arithmetic number, because the mean of its divisors is an integer number (9946409014).

Almost surely, 2^19892818027 is an apocalyptic number.

19892818027 is a deficient number, since it is larger than the sum of its proper divisors (1).

19892818027 is an equidigital number, since it uses as much as digits as its factorization.

19892818027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1161216, while the sum is 55.

The spelling of 19892818027 in words is "nineteen billion, eight hundred ninety-two million, eight hundred eighteen thousand, twenty-seven".