1026221166 has 12 divisors (see below), whose sum is σ = 2223479232. Its totient is φ = 342073716.

The previous prime is 1026221123. The next prime is 1026221191. The reversal of 1026221166 is 6611226201.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 28506126 + ... + 28506161.

It is an arithmetic number, because the mean of its divisors is an integer number (185289936).

Almost surely, 2^1026221166 is an apocalyptic number.

1026221166 is an abundant number, since it is smaller than the sum of its proper divisors (1197258066).

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

1026221166 is a wasteful number, since it uses less digits than its factorization.

1026221166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57012295 (or 57012292 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 27.

The square root of 1026221166 is about 32034.6869190258. The cubic root of 1026221166 is about 1008.6650880467.

Adding to 1026221166 its reverse (6611226201), we get a palindrome (7637447367).

The spelling of 1026221166 in words is "one billion, twenty-six million, two hundred twenty-one thousand, one hundred sixty-six".