36963821 has 2 divisors, whose sum is σ = 36963822. Its totient is φ = 36963820.

The previous prime is 36963809. The next prime is 36963827. The reversal of 36963821 is 12836963.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 23377225 + 13586596 = 4835^2 + 3686^2 .

It is a cyclic number.

It is not a de Polignac number, because 36963821 - 2¹⁸ = 36701677 is a prime.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36963827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18481910 + 18481911.

It is an arithmetic number, because the mean of its divisors is an integer number (18481911).

Almost surely, 2^36963821 is an apocalyptic number.

It is an amenable number.

36963821 is a deficient number, since it is larger than the sum of its proper divisors (1).

36963821 is an equidigital number, since it uses as much as digits as its factorization.

36963821 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 36963821 is about 6079.7879074849. The cubic root of 36963821 is about 333.1135403272.

The spelling of 36963821 in words is "thirty-six million, nine hundred sixty-three thousand, eight hundred twenty-one".