1232809985 has 16 divisors (see below), whose sum is σ = 1614798720. Its totient is φ = 896067840.

The previous prime is 1232809979. The next prime is 1232810009. The reversal of 1232809985 is 5899082321.

It is not a de Polignac number, because 1232809985 - 2⁴ = 1232809969 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 106649 + ... + 117641.

It is an arithmetic number, because the mean of its divisors is an integer number (100924920).

Almost surely, 2^1232809985 is an apocalyptic number.

It is an amenable number.

1232809985 is a deficient number, since it is larger than the sum of its proper divisors (381988735).

1232809985 is a wasteful number, since it uses less digits than its factorization.

1232809985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13048.

The product of its (nonzero) digits is 311040, while the sum is 47.

The square root of 1232809985 is about 35111.3939484037. The cubic root of 1232809985 is about 1072.2565661913.

The spelling of 1232809985 in words is "one billion, two hundred thirty-two million, eight hundred nine thousand, nine hundred eighty-five".