2166898803 has 4 divisors (see below), whose sum is σ = 2889198408. Its totient is φ = 1444599200.

The previous prime is 2166898759. The next prime is 2166898807. The reversal of 2166898803 is 3088986612.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2166898803 - 2¹² = 2166894707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2166898807) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 361149798 + ... + 361149803.

It is an arithmetic number, because the mean of its divisors is an integer number (722299602).

Almost surely, 2^2166898803 is an apocalyptic number.

2166898803 is a deficient number, since it is larger than the sum of its proper divisors (722299605).

2166898803 is an equidigital number, since it uses as much as digits as its factorization.

2166898803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 722299604.

The product of its (nonzero) digits is 995328, while the sum is 51.

The square root of 2166898803 is about 46549.9602899938. The cubic root of 2166898803 is about 1294.0355570656.

The spelling of 2166898803 in words is "two billion, one hundred sixty-six million, eight hundred ninety-eight thousand, eight hundred three".