36891623 has 2 divisors, whose sum is σ = 36891624. Its totient is φ = 36891622.

The previous prime is 36891611. The next prime is 36891637. The reversal of 36891623 is 32619863.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 36891623 - 2¹⁸ = 36629479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36891653) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18445811 + 18445812.

It is an arithmetic number, because the mean of its divisors is an integer number (18445812).

Almost surely, 2^36891623 is an apocalyptic number.

36891623 is a deficient number, since it is larger than the sum of its proper divisors (1).

36891623 is an equidigital number, since it uses as much as digits as its factorization.

36891623 is an evil number, because the sum of its binary digits is even.

The product of its digits is 46656, while the sum is 38.

The square root of 36891623 is about 6073.8474626879. The cubic root of 36891623 is about 332.8965190521.

The spelling of 36891623 in words is "thirty-six million, eight hundred ninety-one thousand, six hundred twenty-three".