2166582430 has 16 divisors (see below), whose sum is σ = 3905054784. Its totient is φ = 865476000.

The previous prime is 2166582409. The next prime is 2166582437. The reversal of 2166582430 is 342856612.

It is a self number, because there is not a number n which added to its sum of digits gives 2166582430.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2166582437) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 136737 + ... + 151756.

It is an arithmetic number, because the mean of its divisors is an integer number (244065924).

Almost surely, 2^2166582430 is an apocalyptic number.

2166582430 is a deficient number, since it is larger than the sum of its proper divisors (1738472354).

2166582430 is a wasteful number, since it uses less digits than its factorization.

2166582430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 289251.

The product of its (nonzero) digits is 69120, while the sum is 37.

The square root of 2166582430 is about 46546.5619568191. The cubic root of 2166582430 is about 1293.9725764537.

The spelling of 2166582430 in words is "two billion, one hundred sixty-six million, five hundred eighty-two thousand, four hundred thirty".