2166662426 has 8 divisors (see below), whose sum is σ = 3250364544. Its totient is φ = 1083207580.

The previous prime is 2166662417. The next prime is 2166662431. The reversal of 2166662426 is 6242666612.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-4 number, since 4×2166662426⁴ (a number of 38 digits) contains 4444 as substring.

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 3 ways as a sum of consecutive naturals, for example, 38090 + ... + 76053.

It is an arithmetic number, because the mean of its divisors is an integer number (406295568).

Almost surely, 2^2166662426 is an apocalyptic number.

2166662426 is a deficient number, since it is larger than the sum of its proper divisors (1083702118).

2166662426 is a wasteful number, since it uses less digits than its factorization.

2166662426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123636.

The product of its digits is 248832, while the sum is 41.

The square root of 2166662426 is about 46547.4212604737. The cubic root of 2166662426 is about 1293.9885018969.

The spelling of 2166662426 in words is "two billion, one hundred sixty-six million, six hundred sixty-two thousand, four hundred twenty-six".