18836036 has 6 divisors (see below), whose sum is σ = 32963070. Its totient is φ = 9418016.

The previous prime is 18836033. The next prime is 18836039. The reversal of 18836036 is 63063881.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18836033) and next prime (18836039).

It can be written as a sum of positive squares in only one way, i.e., 18113536 + 722500 = 4256^2 + 850^2 .

It is a junction number, because it is equal to n+sod(n) for n = 18835987 and 18836005.

It is not an unprimeable number, because it can be changed into a prime (18836033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2354501 + ... + 2354508.

It is an arithmetic number, because the mean of its divisors is an integer number (5493845).

Almost surely, 2^18836036 is an apocalyptic number.

It is an amenable number.

18836036 is a deficient number, since it is larger than the sum of its proper divisors (14127034).

18836036 is a wasteful number, since it uses less digits than its factorization.

18836036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4709013 (or 4709011 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 18836036 is about 4340.0502301241. The cubic root of 18836036 is about 266.0703641089.

The spelling of 18836036 in words is "eighteen million, eight hundred thirty-six thousand, thirty-six".