268010183809 has 9 divisors (see below), whose sum is σ = 268841584713. Its totient is φ = 267181350912.

The previous prime is 268010183761. The next prime is 268010183821. The reversal of 268010183809 is 908381010862.

The square root of 268010183809 is 517697.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 4 ways, for example, as 44916444225 + 223093739584 = 211935^2 + 472328^2 .

It is not a de Polignac number, because 268010183809 - 2¹⁵ = 268010151041 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (268010183879) by changing a digit.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 232445377 + ... + 232446529.

Almost surely, 2^268010183809 is an apocalyptic number.

268010183809 is the 517697-th square number.

268010183809 is the 258849-th centered octagonal number.

It is an amenable number.

268010183809 is a deficient number, since it is larger than the sum of its proper divisors (831400904).

268010183809 is an frugal number, since it uses more digits than its factorization.

268010183809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3204 (or 1602 counting only the distinct ones).

The product of its (nonzero) digits is 165888, while the sum is 46.

The spelling of 268010183809 in words is "two hundred sixty-eight billion, ten million, one hundred eighty-three thousand, eight hundred nine".