18223380036 has 81 divisors (see below), whose sum is σ = 46685047773. Its totient is φ = 5993733600.

The previous prime is 18223380023. The next prime is 18223380053. The reversal of 18223380036 is 63008332281.

The square root of 18223380036 is 134994.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in only one way, i.e., 2134994436 + 16088385600 = 46206^2 + 126840^2 .

It is a super-2 number, since 2×18223380036² (a number of 21 digits) contains 22 as substring.

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

It is an unprimeable number.

It is a polite number, since it can be written in 26 ways as a sum of consecutive naturals, for example, 120684561 + ... + 120684711.

Almost surely, 2^18223380036 is an apocalyptic number.

18223380036 is the 134994-th square number.

It is an amenable number.

18223380036 is an abundant number, since it is smaller than the sum of its proper divisors (28461667737).

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

18223380036 is a wasteful number, since it uses less digits than its factorization.

18223380036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 610 (or 305 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 36.

Multiplying 18223380036 by its sum of digits (36), we get a square (656041681296 = 809964²).

18223380036 divided by its sum of digits (36) gives a square (506205001 = 22499²).

The spelling of 18223380036 in words is "eighteen billion, two hundred twenty-three million, three hundred eighty thousand, thirty-six".