36849509 has 4 divisors (see below), whose sum is σ = 36888204. Its totient is φ = 36810816.

The previous prime is 36849487. The next prime is 36849511. The reversal of 36849509 is 90594863.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 90594863 = 5237 ⋅17299.

It can be written as a sum of positive squares in 2 ways, for example, as 35736484 + 1113025 = 5978^2 + 1055^2 .

It is a cyclic number.

It is not a de Polignac number, because 36849509 - 2¹⁶ = 36783973 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 36849509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (36849539) 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, 17882 + ... + 19835.

It is an arithmetic number, because the mean of its divisors is an integer number (9222051).

Almost surely, 2^36849509 is an apocalyptic number.

It is an amenable number.

36849509 is a deficient number, since it is larger than the sum of its proper divisors (38695).

36849509 is an equidigital number, since it uses as much as digits as its factorization.

36849509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38694.

The product of its (nonzero) digits is 233280, while the sum is 44.

The square root of 36849509 is about 6070.3796421641. The cubic root of 36849509 is about 332.7697970397.

The spelling of 36849509 in words is "thirty-six million, eight hundred forty-nine thousand, five hundred nine".