1120020018 has 64 divisors (see below), whose sum is σ = 2621337600. Its totient is φ = 315938880.

The previous prime is 1120019977. The next prime is 1120020023. The reversal of 1120020018 is 8100200211.

It is a junction number, because it is equal to n+sod(n) for n = 1120019979 and 1120020006.

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 31 ways as a sum of consecutive naturals, for example, 33753 + ... + 58131.

It is an arithmetic number, because the mean of its divisors is an integer number (40958400).

Almost surely, 2^1120020018 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1120020018, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310668800).

1120020018 is an abundant number, since it is smaller than the sum of its proper divisors (1501317582).

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

1120020018 is a wasteful number, since it uses less digits than its factorization.

1120020018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24447.

The product of its (nonzero) digits is 32, while the sum is 15.

The square root of 1120020018 is about 33466.7001361054. The cubic root of 1120020018 is about 1038.5050074373.

Adding to 1120020018 its reverse (8100200211), we get a palindrome (9220220229).

The spelling of 1120020018 in words is "one billion, one hundred twenty million, twenty thousand, eighteen".