18290036 has 6 divisors (see below), whose sum is σ = 32007570. Its totient is φ = 9145016.

The previous prime is 18290021. The next prime is 18290053. The reversal of 18290036 is 63009281.

It can be written as a sum of positive squares in only one way, i.e., 17808400 + 481636 = 4220^2 + 694^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18289990 and 18290008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2286251 + ... + 2286258.

It is an arithmetic number, because the mean of its divisors is an integer number (5334595).

Almost surely, 2^18290036 is an apocalyptic number.

It is an amenable number.

18290036 is a deficient number, since it is larger than the sum of its proper divisors (13717534).

18290036 is a wasteful number, since it uses less digits than its factorization.

18290036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4572513 (or 4572511 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 29.

The square root of 18290036 is about 4276.6851649379. The cubic root of 18290036 is about 263.4742559647.

The spelling of 18290036 in words is "eighteen million, two hundred ninety thousand, thirty-six".