2166408936 has 32 divisors (see below), whose sum is σ = 6017803200. Its totient is φ = 722136240.

The previous prime is 2166408919. The next prime is 2166408943. The reversal of 2166408936 is 6398046612.

It is a junction number, because it is equal to n+sod(n) for n = 2166408891 and 2166408900.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 5014620 + ... + 5015051.

It is an arithmetic number, because the mean of its divisors is an integer number (188056350).

Almost surely, 2^2166408936 is an apocalyptic number.

It is an amenable number.

2166408936 is an abundant number, since it is smaller than the sum of its proper divisors (3851394264).

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

2166408936 is a wasteful number, since it uses less digits than its factorization.

2166408936 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10029686 (or 10029676 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 2166408936 is about 46544.6982587706. The cubic root of 2166408936 is about 1293.9380362692.

The spelling of 2166408936 in words is "two billion, one hundred sixty-six million, four hundred eight thousand, nine hundred thirty-six".