36018909 has 6 divisors (see below), whose sum is σ = 52027326. Its totient is φ = 24012600.

The previous prime is 36018901. The next prime is 36018919. The reversal of 36018909 is 90981063.

It can be written as a sum of positive squares in only one way, i.e., 18404100 + 17614809 = 4290^2 + 4197^2 .

It is not a de Polignac number, because 36018909 - 2³ = 36018901 is a prime.

It is a plaindrome in base 16.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36018901) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 2001042 + ... + 2001059.

It is an arithmetic number, because the mean of its divisors is an integer number (8671221).

Almost surely, 2^36018909 is an apocalyptic number.

It is an amenable number.

36018909 is a deficient number, since it is larger than the sum of its proper divisors (16008417).

36018909 is a wasteful number, since it uses less digits than its factorization.

36018909 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4002107 (or 4002104 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 36.

The square root of 36018909 is about 6001.5755431387. The cubic root of 36018909 is about 330.2505260135.

The spelling of 36018909 in words is "thirty-six million, eighteen thousand, nine hundred nine".