18036501 has 32 divisors (see below), whose sum is σ = 28600320. Its totient is φ = 9896256.

The previous prime is 18036457. The next prime is 18036509. The reversal of 18036501 is 10563081.

It is not a de Polignac number, because 18036501 - 2⁶ = 18036437 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18036509) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 107920 + ... + 108086.

It is an arithmetic number, because the mean of its divisors is an integer number (893760).

Almost surely, 2^18036501 is an apocalyptic number.

It is an amenable number.

18036501 is a deficient number, since it is larger than the sum of its proper divisors (10563819).

18036501 is a wasteful number, since it uses less digits than its factorization.

18036501 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 353.

The product of its (nonzero) digits is 720, while the sum is 24.

The square root of 18036501 is about 4246.9401926564. The cubic root of 18036501 is about 262.2511673723.

Adding to 18036501 its reverse (10563081), we get a palindrome (28599582).

It can be divided in two parts, 18036 and 501, that multiplied together give a square (9036036 = 3006²).

The spelling of 18036501 in words is "eighteen million, thirty-six thousand, five hundred one".