1009668243 has 16 divisors (see below), whose sum is σ = 1363059360. Its totient is φ = 664713984.

The previous prime is 1009668181. The next prime is 1009668277. The reversal of 1009668243 is 3428669001.

It is not a de Polignac number, because 1009668243 - 2²⁵ = 976113811 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1009668043) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 268605 + ... + 272337.

It is an arithmetic number, because the mean of its divisors is an integer number (85191210).

Almost surely, 2^1009668243 is an apocalyptic number.

1009668243 is a deficient number, since it is larger than the sum of its proper divisors (353391117).

1009668243 is a wasteful number, since it uses less digits than its factorization.

1009668243 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4838.

The product of its (nonzero) digits is 62208, while the sum is 39.

The square root of 1009668243 is about 31775.2772293178. The cubic root of 1009668243 is about 1003.2124169934.

The spelling of 1009668243 in words is "one billion, nine million, six hundred sixty-eight thousand, two hundred forty-three".