1121851018 has 16 divisors (see below), whose sum is σ = 1693598400. Its totient is φ = 557330400.

The previous prime is 1121851001. The next prime is 1121851021. The reversal of 1121851018 is 8101581211.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 203158 + ... + 208606.

It is an arithmetic number, because the mean of its divisors is an integer number (105849900).

Almost surely, 2^1121851018 is an apocalyptic number.

1121851018 is a deficient number, since it is larger than the sum of its proper divisors (571747382).

1121851018 is a wasteful number, since it uses less digits than its factorization.

1121851018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6093.

The product of its (nonzero) digits is 640, while the sum is 28.

The square root of 1121851018 is about 33494.0445154060. The cubic root of 1121851018 is about 1039.0706126322.

The spelling of 1121851018 in words is "one billion, one hundred twenty-one million, eight hundred fifty-one thousand, eighteen".