1080506209 has 16 divisors (see below), whose sum is σ = 1134650880. Its totient is φ = 1027728000.

The previous prime is 1080506197. The next prime is 1080506233. The reversal of 1080506209 is 9026050801.

It is a cyclic number.

It is not a de Polignac number, because 1080506209 - 2²⁹ = 543635297 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1080506309) 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, 441429 + ... + 443869.

It is an arithmetic number, because the mean of its divisors is an integer number (70915680).

Almost surely, 2^1080506209 is an apocalyptic number.

It is an amenable number.

1080506209 is a deficient number, since it is larger than the sum of its proper divisors (54144671).

1080506209 is a wasteful number, since it uses less digits than its factorization.

1080506209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2712.

The product of its (nonzero) digits is 4320, while the sum is 31.

The square root of 1080506209 is about 32871.0542727184. The cubic root of 1080506209 is about 1026.1458402300.

The spelling of 1080506209 in words is "one billion, eighty million, five hundred six thousand, two hundred nine".