1138237 has 2 divisors, whose sum is σ = 1138238. Its totient is φ = 1138236.

The previous prime is 1138213. The next prime is 1138273. The reversal of 1138237 is 7328311.

Together with next prime (1138273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 649636 + 488601 = 806^2 + 699^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138237 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569118 + 569119.

It is an arithmetic number, because the mean of its divisors is an integer number (569119).

2^1138237 is an apocalyptic number.

It is an amenable number.

1138237 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138237 is an equidigital number, since it uses as much as digits as its factorization.

1138237 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1008, while the sum is 25.

The square root of 1138237 is about 1066.8819053672. The cubic root of 1138237 is about 104.4105138093.

The spelling of 1138237 in words is "one million, one hundred thirty-eight thousand, two hundred thirty-seven".