19892818093 has 2 divisors, whose sum is σ = 19892818094. Its totient is φ = 19892818092.

The previous prime is 19892818027. The next prime is 19892818097. The reversal of 19892818093 is 39081829891.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 15650510404 + 4242307689 = 125102^2 + 65133^2 .

It is a cyclic number.

It is not a de Polignac number, because 19892818093 - 2¹³ = 19892809901 is a prime.

It is a congruent number.

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, 9946409046 + 9946409047.

It is an arithmetic number, because the mean of its divisors is an integer number (9946409047).

Almost surely, 2^19892818093 is an apocalyptic number.

It is an amenable number.

19892818093 is a deficient number, since it is larger than the sum of its proper divisors (1).

19892818093 is an equidigital number, since it uses as much as digits as its factorization.

19892818093 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2239488, while the sum is 58.

The spelling of 19892818093 in words is "nineteen billion, eight hundred ninety-two million, eight hundred eighteen thousand, ninety-three".