36181089 has 24 divisors (see below), whose sum is σ = 60000512. Its totient is φ = 20580480.

The previous prime is 36181039. The next prime is 36181109. The reversal of 36181089 is 98018163.

36181089 = 101² + 102² + ... + 478².

It is not a de Polignac number, because 36181089 - 2⁹ = 36180577 is a prime.

It is a Smith number, since the sum of its digits (36) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36181039) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 13992 + ... + 16374.

Almost surely, 2^36181089 is an apocalyptic number.

It is an amenable number.

36181089 is a deficient number, since it is larger than the sum of its proper divisors (23819423).

36181089 is a wasteful number, since it uses less digits than its factorization.

36181089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2637 (or 2634 counting only the distinct ones).

The product of its (nonzero) digits is 10368, while the sum is 36.

The square root of 36181089 is about 6015.0718200201. The cubic root of 36181089 is about 330.7454497928.

The spelling of 36181089 in words is "thirty-six million, one hundred eighty-one thousand, eighty-nine".