36138369 has 4 divisors (see below), whose sum is σ = 48184496. Its totient is φ = 24092244.

The previous prime is 36138367. The next prime is 36138383. The reversal of 36138369 is 96383163.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 96383163 = 3 ⋅32127721.

It is not a de Polignac number, because 36138369 - 2¹ = 36138367 is a prime.

It is a super-2 number, since 2×36138369² = 2611963427960322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36138367) 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, 6023059 + ... + 6023064.

It is an arithmetic number, because the mean of its divisors is an integer number (12046124).

Almost surely, 2^36138369 is an apocalyptic number.

It is an amenable number.

36138369 is a deficient number, since it is larger than the sum of its proper divisors (12046127).

36138369 is a wasteful number, since it uses less digits than its factorization.

36138369 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12046126.

The product of its digits is 69984, while the sum is 39.

The square root of 36138369 is about 6011.5196913925. The cubic root of 36138369 is about 330.6152251307.

The spelling of 36138369 in words is "thirty-six million, one hundred thirty-eight thousand, three hundred sixty-nine".