36157729 has 2 divisors, whose sum is σ = 36157730. Its totient is φ = 36157728.

The previous prime is 36157727. The next prime is 36157757. The reversal of 36157729 is 92775163.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 29680704 + 6477025 = 5448^2 + 2545^2 .

It is a cyclic number.

It is not a de Polignac number, because 36157729 - 2¹ = 36157727 is a prime.

Together with 36157727, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 36157691 and 36157700.

It is not a weakly prime, because it can be changed into another prime (36157721) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18078864 + 18078865.

It is an arithmetic number, because the mean of its divisors is an integer number (18078865).

Almost surely, 2^36157729 is an apocalyptic number.

It is an amenable number.

36157729 is a deficient number, since it is larger than the sum of its proper divisors (1).

36157729 is an equidigital number, since it uses as much as digits as its factorization.

36157729 is an evil number, because the sum of its binary digits is even.

The product of its digits is 79380, while the sum is 40.

The square root of 36157729 is about 6013.1297175431. The cubic root of 36157729 is about 330.6742535104.

The spelling of 36157729 in words is "thirty-six million, one hundred fifty-seven thousand, seven hundred twenty-nine".