36169729 has 2 divisors, whose sum is σ = 36169730. Its totient is φ = 36169728.

The previous prime is 36169709. The next prime is 36169747. The reversal of 36169729 is 92796163.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 35129329 + 1040400 = 5927^2 + 1020^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-36169729 is a prime.

It is not a weakly prime, because it can be changed into another prime (36169709) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18084864 + 18084865.

It is an arithmetic number, because the mean of its divisors is an integer number (18084865).

Almost surely, 2^36169729 is an apocalyptic number.

It is an amenable number.

36169729 is a deficient number, since it is larger than the sum of its proper divisors (1).

36169729 is an equidigital number, since it uses as much as digits as its factorization.

36169729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 122472, while the sum is 43.

The square root of 36169729 is about 6014.1274512601. The cubic root of 36169729 is about 330.7108307721.

The spelling of 36169729 in words is "thirty-six million, one hundred sixty-nine thousand, seven hundred twenty-nine".