36243973 has 2 divisors, whose sum is σ = 36243974. Its totient is φ = 36243972.

The previous prime is 36243971. The next prime is 36244007. The reversal of 36243973 is 37934263.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 35247969 + 996004 = 5937^2 + 998^2 .

It is an emirp because it is prime and its reverse (37934263) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36243973 - 2¹ = 36243971 is a prime.

Together with 36243971, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36243971) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18121986 + 18121987.

It is an arithmetic number, because the mean of its divisors is an integer number (18121987).

Almost surely, 2^36243973 is an apocalyptic number.

It is an amenable number.

36243973 is a deficient number, since it is larger than the sum of its proper divisors (1).

36243973 is an equidigital number, since it uses as much as digits as its factorization.

36243973 is an evil number, because the sum of its binary digits is even.

The product of its digits is 81648, while the sum is 37.

The square root of 36243973 is about 6020.2967534832. The cubic root of 36243973 is about 330.9369546139.

The spelling of 36243973 in words is "thirty-six million, two hundred forty-three thousand, nine hundred seventy-three".