1220610166 has 8 divisors (see below), whose sum is σ = 1938616200. Its totient is φ = 574404768.

The previous prime is 1220610137. The next prime is 1220610187. The reversal of 1220610166 is 6610160221.

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

It is a self number, because there is not a number n which added to its sum of digits gives 1220610166.

It is a congruent number.

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, 17950116 + ... + 17950183.

It is an arithmetic number, because the mean of its divisors is an integer number (242327025).

Almost surely, 2^1220610166 is an apocalyptic number.

1220610166 is a deficient number, since it is larger than the sum of its proper divisors (718006034).

1220610166 is a wasteful number, since it uses less digits than its factorization.

1220610166 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35900318.

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1220610166 is about 34937.2318021906. The cubic root of 1220610166 is about 1068.7078372113.

Adding to 1220610166 its reverse (6610160221), we get a palindrome (7830770387).

The spelling of 1220610166 in words is "one billion, two hundred twenty million, six hundred ten thousand, one hundred sixty-six".