1146808989 has 8 divisors (see below), whose sum is σ = 1698976320. Its totient is φ = 764539308.

The previous prime is 1146808963. The next prime is 1146808997. The reversal of 1146808989 is 9898086411.

It is a de Polignac number, because none of the positive numbers 2^k-1146808989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1146808189) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21237177 + ... + 21237230.

It is an arithmetic number, because the mean of its divisors is an integer number (212372040).

Almost surely, 2^1146808989 is an apocalyptic number.

It is an amenable number.

1146808989 is a deficient number, since it is larger than the sum of its proper divisors (552167331).

1146808989 is an equidigital number, since it uses as much as digits as its factorization.

1146808989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42474416 (or 42474410 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 54.

The square root of 1146808989 is about 33864.5683421478. The cubic root of 1146808989 is about 1046.7196152347.

The spelling of 1146808989 in words is "one billion, one hundred forty-six million, eight hundred eight thousand, nine hundred eighty-nine".