36211993 has 2 divisors, whose sum is σ = 36211994. Its totient is φ = 36211992.

The previous prime is 36211991. The next prime is 36212003. The reversal of 36211993 is 39911263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 33212169 + 2999824 = 5763^2 + 1732^2 .

It is a cyclic number.

It is not a de Polignac number, because 36211993 - 2¹ = 36211991 is a prime.

It is a super-2 number, since 2×36211993² = 2622616874064098, which contains 22 as substring.

Together with 36211991, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (36211991) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18105996 + 18105997.

It is an arithmetic number, because the mean of its divisors is an integer number (18105997).

Almost surely, 2^36211993 is an apocalyptic number.

It is an amenable number.

36211993 is a deficient number, since it is larger than the sum of its proper divisors (1).

36211993 is an equidigital number, since it uses as much as digits as its factorization.

36211993 is an evil number, because the sum of its binary digits is even.

The product of its digits is 8748, while the sum is 34.

The square root of 36211993 is about 6017.6401520862. The cubic root of 36211993 is about 330.8395915011.

The spelling of 36211993 in words is "thirty-six million, two hundred eleven thousand, nine hundred ninety-three".