36971509 has 2 divisors, whose sum is σ = 36971510. Its totient is φ = 36971508.

The previous prime is 36971503. The next prime is 36971513. The reversal of 36971509 is 90517963.

36971509 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 31922500 + 5049009 = 5650^2 + 2247^2 .

It is a cyclic number.

It is not a de Polignac number, because 36971509 - 2⁵ = 36971477 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36971503) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18485754 + 18485755.

It is an arithmetic number, because the mean of its divisors is an integer number (18485755).

Almost surely, 2^36971509 is an apocalyptic number.

It is an amenable number.

36971509 is a deficient number, since it is larger than the sum of its proper divisors (1).

36971509 is an equidigital number, since it uses as much as digits as its factorization.

36971509 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 51030, while the sum is 40.

The square root of 36971509 is about 6080.4201335105. The cubic root of 36971509 is about 333.1366331722.

The spelling of 36971509 in words is "thirty-six million, nine hundred seventy-one thousand, five hundred nine".