3638237 has 2 divisors, whose sum is σ = 3638238. Its totient is φ = 3638236.

The previous prime is 3638233. The next prime is 3638249. The reversal of 3638237 is 7328363.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3308761 + 329476 = 1819^2 + 574^2 .

It is a cyclic number.

It is not a de Polignac number, because 3638237 - 2² = 3638233 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3638233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1819118 + 1819119.

It is an arithmetic number, because the mean of its divisors is an integer number (1819119).

Almost surely, 2^3638237 is an apocalyptic number.

It is an amenable number.

3638237 is a deficient number, since it is larger than the sum of its proper divisors (1).

3638237 is an equidigital number, since it uses as much as digits as its factorization.

3638237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 18144, while the sum is 32.

The square root of 3638237 is about 1907.4163153334. The cubic root of 3638237 is about 153.8025946488.

The spelling of 3638237 in words is "three million, six hundred thirty-eight thousand, two hundred thirty-seven".