1122179856 has 80 divisors (see below), whose sum is σ = 3319085184. Its totient is φ = 320044032.

The previous prime is 1122179831. The next prime is 1122179887. The reversal of 1122179856 is 6589712211.

It is a Harshad number since it is a multiple of its sum of digits (42).

1122179856 is a Rhonda number in base 10.

Its product of digits (60480) is a multiple of the sum of its prime factors (6048).

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, 204606 + ... + 210018.

Almost surely, 2^1122179856 is an apocalyptic number.

1122179856 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1122179856, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1659542592).

1122179856 is an abundant number, since it is smaller than the sum of its proper divisors (2196905328).

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

1122179856 is a wasteful number, since it uses less digits than its factorization.

1122179856 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6048 (or 6042 counting only the distinct ones).

The product of its digits is 60480, while the sum is 42.

The square root of 1122179856 is about 33498.9530582674. The cubic root of 1122179856 is about 1039.1721271580.

The spelling of 1122179856 in words is "one billion, one hundred twenty-two million, one hundred seventy-nine thousand, eight hundred fifty-six".