1111020018 has 16 divisors (see below), whose sum is σ = 2222443200. Its totient is φ = 370272816.

The previous prime is 1111020017. The next prime is 1111020049. The reversal of 1111020018 is 8100201111.

It is a junction number, because it is equal to n+sod(n) for n = 1111019979 and 1111020006.

It is not an unprimeable number, because it can be changed into a prime (1111020011) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 28371 + ... + 55017.

It is an arithmetic number, because the mean of its divisors is an integer number (138902700).

Almost surely, 2^1111020018 is an apocalyptic number.

1111020018 is an abundant number, since it is smaller than the sum of its proper divisors (1111423182).

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

1111020018 is a wasteful number, since it uses less digits than its factorization.

1111020018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33601.

The product of its (nonzero) digits is 16, while the sum is 15.

The square root of 1111020018 is about 33331.9669086599. The cubic root of 1111020018 is about 1035.7158631301.

Adding to 1111020018 its reverse (8100201111), we get a palindrome (9211221129).

The spelling of 1111020018 in words is "one billion, one hundred eleven million, twenty thousand, eighteen".