2166662792 has 36 divisors (see below), whose sum is σ = 4727767815. Its totient is φ = 928174800.

The previous prime is 2166662747. The next prime is 2166662803. The reversal of 2166662792 is 2972666612.

It is a powerful number, because all its prime factors have an exponent greater than 1 and also an Achilles number because it is not a perfect power.

It can be written as a sum of positive squares in only one way, i.e., 1083331396 + 1083331396 = 32914^2 + 32914^2 .

It is an ABA number since it can be written as A⋅B^A, here for A=2, B=32914.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 8 ways as a sum of consecutive naturals, for example, 920417 + ... + 922767.

Almost surely, 2^2166662792 is an apocalyptic number.

It is an amenable number.

2166662792 is an abundant number, since it is smaller than the sum of its proper divisors (2561105023).

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

2166662792 is an frugal number, since it uses more digits than its factorization.

2166662792 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4722 (or 2360 counting only the distinct ones).

The product of its digits is 653184, while the sum is 47.

The square root of 2166662792 is about 46547.4251919481. The cubic root of 2166662792 is about 1293.9885747586.

The spelling of 2166662792 in words is "two billion, one hundred sixty-six million, six hundred sixty-two thousand, seven hundred ninety-two".