36187969 has 4 divisors (see below), whose sum is σ = 37435860. Its totient is φ = 34940080.

The previous prime is 36187937. The next prime is 36187981. The reversal of 36187969 is 96978163.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 18447025 + 17740944 = 4295^2 + 4212^2 .

It is a cyclic number.

It is not a de Polignac number, because 36187969 - 2⁵ = 36187937 is a prime.

It is a super-2 number, since 2×36187969² = 2619138200689922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36187909) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 623902 + ... + 623959.

It is an arithmetic number, because the mean of its divisors is an integer number (9358965).

Almost surely, 2^36187969 is an apocalyptic number.

It is an amenable number.

36187969 is a deficient number, since it is larger than the sum of its proper divisors (1247891).

36187969 is a wasteful number, since it uses less digits than its factorization.

36187969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1247890.

The product of its digits is 489888, while the sum is 49.

The square root of 36187969 is about 6015.6436895814. The cubic root of 36187969 is about 330.7664127188.

The spelling of 36187969 in words is "thirty-six million, one hundred eighty-seven thousand, nine hundred sixty-nine".