18016136 has 8 divisors (see below), whose sum is σ = 33780270. Its totient is φ = 9008064.

The previous prime is 18016133. The next prime is 18016139. The reversal of 18016136 is 63161081.

It is an interprime number because it is at equal distance from previous prime (18016133) and next prime (18016139).

It can be written as a sum of positive squares in only one way, i.e., 12208036 + 5808100 = 3494^2 + 2410^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (18016133) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1126001 + ... + 1126016.

Almost surely, 2^18016136 is an apocalyptic number.

It is an amenable number.

18016136 is a deficient number, since it is larger than the sum of its proper divisors (15764134).

18016136 is a wasteful number, since it uses less digits than its factorization.

18016136 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2252023 (or 2252019 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 26.

The square root of 18016136 is about 4244.5419069671. The cubic root of 18016136 is about 262.1524276673.

The spelling of 18016136 in words is "eighteen million, sixteen thousand, one hundred thirty-six".