2166343902 has 48 divisors (see below), whose sum is σ = 4746074112. Its totient is φ = 714102480.

The previous prime is 2166343901. The next prime is 2166343909. The reversal of 2166343902 is 2093436612.

2166343902 is a `hidden beast` number, since 2 + 16 + 634 + 3 + 9 + 0 + 2 = 666.

2166343902 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166343901) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 791877 + ... + 794607.

It is an arithmetic number, because the mean of its divisors is an integer number (98876544).

Almost surely, 2^2166343902 is an apocalyptic number.

2166343902 is an abundant number, since it is smaller than the sum of its proper divisors (2579730210).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2166343902 is a wasteful number, since it uses less digits than its factorization.

2166343902 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3213 (or 3210 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 2166343902 is about 46543.9996347542. Note that the first 3 decimals coincide. The cubic root of 2166343902 is about 1293.9250884508.

The spelling of 2166343902 in words is "two billion, one hundred sixty-six million, three hundred forty-three thousand, nine hundred two".