2166825419 has 16 divisors (see below), whose sum is σ = 2376380160. Its totient is φ = 1959401760.

The previous prime is 2166825407. The next prime is 2166825421. The reversal of 2166825419 is 9145286612.

It is a cyclic number.

It is not a de Polignac number, because 2166825419 - 2⁴ = 2166825403 is a prime.

It is a super-2 number, since 2×2166825419² = 9390264792849051122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2166825419.

It is not an unprimeable number, because it can be changed into a prime (2166825439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2718329 + ... + 2719125.

It is an arithmetic number, because the mean of its divisors is an integer number (148523760).

Almost surely, 2^2166825419 is an apocalyptic number.

2166825419 is a deficient number, since it is larger than the sum of its proper divisors (209554741).

2166825419 is a wasteful number, since it uses less digits than its factorization.

2166825419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1810.

The product of its digits is 207360, while the sum is 44.

The square root of 2166825419 is about 46549.1720549356. The cubic root of 2166825419 is about 1294.0209490034.

The spelling of 2166825419 in words is "two billion, one hundred sixty-six million, eight hundred twenty-five thousand, four hundred nineteen".