36881237 has 2 divisors, whose sum is σ = 36881238. Its totient is φ = 36881236.

The previous prime is 36881233. The next prime is 36881291. The reversal of 36881237 is 73218863.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 21585316 + 15295921 = 4646^2 + 3911^2 .

It is an emirp because it is prime and its reverse (73218863) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 36881237 - 2² = 36881233 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 36881237.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (36881231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18440618 + 18440619.

It is an arithmetic number, because the mean of its divisors is an integer number (18440619).

Almost surely, 2^36881237 is an apocalyptic number.

It is an amenable number.

36881237 is a deficient number, since it is larger than the sum of its proper divisors (1).

36881237 is an equidigital number, since it uses as much as digits as its factorization.

36881237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 48384, while the sum is 38.

The square root of 36881237 is about 6072.9924254851. The cubic root of 36881237 is about 332.8652762977.

The spelling of 36881237 in words is "thirty-six million, eight hundred eighty-one thousand, two hundred thirty-seven".