1138213 has 2 divisors, whose sum is σ = 1138214. Its totient is φ = 1138212.

The previous prime is 1138183. The next prime is 1138237. The reversal of 1138213 is 3128311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 964324 + 173889 = 982^2 + 417^2 .

It is an emirp because it is prime and its reverse (3128311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138213 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569106 + 569107.

It is an arithmetic number, because the mean of its divisors is an integer number (569107).

2^1138213 is an apocalyptic number.

It is an amenable number.

1138213 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138213 is an equidigital number, since it uses as much as digits as its factorization.

1138213 is an evil number, because the sum of its binary digits is even.

The product of its digits is 144, while the sum is 19.

The square root of 1138213 is about 1066.8706575776. The cubic root of 1138213 is about 104.4097799639.

The spelling of 1138213 in words is "one million, one hundred thirty-eight thousand, two hundred thirteen".