19210985092 has 36 divisors (see below), whose sum is σ = 37292210676. Its totient is φ = 8650337280.

The previous prime is 19210985089. The next prime is 19210985111. The reversal of 19210985092 is 29058901291.

It can be written as a sum of positive squares in 6 ways, for example, as 3242619136 + 15968365956 = 56944^2 + 126366^2 .

It is a Smith number, since the sum of its digits (46) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 318853 + ... + 374284.

It is an arithmetic number, because the mean of its divisors is an integer number (1035894741).

Almost surely, 2^19210985092 is an apocalyptic number.

It is an amenable number.

19210985092 is a deficient number, since it is larger than the sum of its proper divisors (18081225584).

19210985092 is a wasteful number, since it uses less digits than its factorization.

19210985092 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 693208 (or 693193 counting only the distinct ones).

The product of its (nonzero) digits is 116640, while the sum is 46.

The spelling of 19210985092 in words is "nineteen billion, two hundred ten million, nine hundred eighty-five thousand, ninety-two".