36161729 has 4 divisors (see below), whose sum is σ = 36173760. Its totient is φ = 36149700.

The previous prime is 36161687. The next prime is 36161777. The reversal of 36161729 is 92716163.

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 a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 36161729 - 2⁸ = 36161473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (36161029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2804 + ... + 8954.

It is an arithmetic number, because the mean of its divisors is an integer number (9043440).

Almost surely, 2^36161729 is an apocalyptic number.

It is an amenable number.

36161729 is a deficient number, since it is larger than the sum of its proper divisors (12031).

36161729 is an equidigital number, since it uses as much as digits as its factorization.

36161729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12030.

The product of its digits is 13608, while the sum is 35.

The square root of 36161729 is about 6013.4623138422. The cubic root of 36161729 is about 330.6864468301.

The spelling of 36161729 in words is "thirty-six million, one hundred sixty-one thousand, seven hundred twenty-nine".