1122168990 has 32 divisors (see below), whose sum is σ = 2694100896. Its totient is φ = 299145600.

The previous prime is 1122168989. The next prime is 1122169001. The reversal of 1122168990 is 998612211.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 149364 + ... + 156696.

It is an arithmetic number, because the mean of its divisors is an integer number (84190653).

Almost surely, 2^1122168990 is an apocalyptic number.

1122168990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1122168990 is an abundant number, since it is smaller than the sum of its proper divisors (1571931906).

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

1122168990 is a wasteful number, since it uses less digits than its factorization.

1122168990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12444.

The product of its (nonzero) digits is 15552, while the sum is 39.

The square root of 1122168990 is about 33498.7908737017. The cubic root of 1122168990 is about 1039.1687730668.

The spelling of 1122168990 in words is "one billion, one hundred twenty-two million, one hundred sixty-eight thousand, nine hundred ninety".