1818018036 has 36 divisors (see below), whose sum is σ = 4611810112. Its totient is φ = 603861264.

The previous prime is 1818018001. The next prime is 1818018043. The reversal of 1818018036 is 6308108181.

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 79036 + ... + 99411.

Almost surely, 2^1818018036 is an apocalyptic number.

It is an amenable number.

1818018036 is an abundant number, since it is smaller than the sum of its proper divisors (2793792076).

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

1818018036 is a wasteful number, since it uses less digits than its factorization.

1818018036 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178740 (or 178735 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 36.

The square root of 1818018036 is about 42638.2227115531. Note that the first 3 decimals coincide. The cubic root of 1818018036 is about 1220.4857950678.

The spelling of 1818018036 in words is "one billion, eight hundred eighteen million, eighteen thousand, thirty-six".