2166098823 has 48 divisors (see below), whose sum is σ = 3688528896. Its totient is φ = 1199275200.

The previous prime is 2166098797. The next prime is 2166098849. The reversal of 2166098823 is 3288906612.

2166098823 is a `hidden beast` number, since 2 + 16 + 609 + 8 + 8 + 23 = 666.

It is an interprime number because it is at equal distance from previous prime (2166098797) and next prime (2166098849).

It is not a de Polignac number, because 2166098823 - 2⁵ = 2166098791 is a prime.

It is a super-2 number, since 2×2166098823² = 9383968222003970658, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166098323) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 295440 + ... + 302682.

It is an arithmetic number, because the mean of its divisors is an integer number (76844352).

Almost surely, 2^2166098823 is an apocalyptic number.

2166098823 is a deficient number, since it is larger than the sum of its proper divisors (1522430073).

2166098823 is a wasteful number, since it uses less digits than its factorization.

2166098823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7404 (or 7401 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 2166098823 is about 46541.3667934237. The cubic root of 2166098823 is about 1293.8762925932.

The spelling of 2166098823 in words is "two billion, one hundred sixty-six million, ninety-eight thousand, eight hundred twenty-three".