38636537 has 2 divisors, whose sum is σ = 38636538. Its totient is φ = 38636536.

The previous prime is 38636531. The next prime is 38636539. The reversal of 38636537 is 73563683.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 30958096 + 7678441 = 5564^2 + 2771^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-38636537 is a prime.

Together with 38636539, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 38636494 and 38636503.

It is not a weakly prime, because it can be changed into another prime (38636531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 19318268 + 19318269.

It is an arithmetic number, because the mean of its divisors is an integer number (19318269).

Almost surely, 2^38636537 is an apocalyptic number.

It is an amenable number.

38636537 is a deficient number, since it is larger than the sum of its proper divisors (1).

38636537 is an equidigital number, since it uses as much as digits as its factorization.

38636537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 272160, while the sum is 41.

The square root of 38636537 is about 6215.8295504301. The cubic root of 38636537 is about 338.0643674899.

The spelling of 38636537 in words is "thirty-eight million, six hundred thirty-six thousand, five hundred thirty-seven".