36138505 has 16 divisors (see below), whose sum is σ = 46880064. Its totient is φ = 26585280.

The previous prime is 36138499. The next prime is 36138517. The reversal of 36138505 is 50583163.

It is not a de Polignac number, because 36138505 - 2¹⁵ = 36105737 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 19050 + ... + 20860.

It is an arithmetic number, because the mean of its divisors is an integer number (2930004).

Almost surely, 2^36138505 is an apocalyptic number.

It is an amenable number.

36138505 is a deficient number, since it is larger than the sum of its proper divisors (10741559).

36138505 is a wasteful number, since it uses less digits than its factorization.

36138505 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2136.

The product of its (nonzero) digits is 10800, while the sum is 31.

The square root of 36138505 is about 6011.5310029975. The cubic root of 36138505 is about 330.6156398664.

The spelling of 36138505 in words is "thirty-six million, one hundred thirty-eight thousand, five hundred five".