2166343892 has 12 divisors (see below), whose sum is σ = 3791913300. Its totient is φ = 1082940096.

The previous prime is 2166343871. The next prime is 2166343901. The reversal of 2166343892 is 2983436612.

It can be written as a sum of positive squares in 2 ways, for example, as 1070336656 + 1096007236 = 32716^2 + 33106^2 .

It is a hoax number, since the sum of its digits (44) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36017 + ... + 75032.

It is an arithmetic number, because the mean of its divisors is an integer number (315992775).

Almost surely, 2^2166343892 is an apocalyptic number.

It is an amenable number.

2166343892 is a deficient number, since it is larger than the sum of its proper divisors (1625569408).

2166343892 is a wasteful number, since it uses less digits than its factorization.

2166343892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 115930 (or 115928 counting only the distinct ones).

The product of its digits is 373248, while the sum is 44.

The square root of 2166343892 is about 46543.9995273290. Note that the first 3 decimals coincide. The cubic root of 2166343892 is about 1293.9250864599.

Adding to 2166343892 its sum of digits (44), we get a square (2166343936 = 46544²).

The spelling of 2166343892 in words is "two billion, one hundred sixty-six million, three hundred forty-three thousand, eight hundred ninety-two".