1138901 has 2 divisors, whose sum is σ = 1138902. Its totient is φ = 1138900.

The previous prime is 1138883. The next prime is 1138919. The reversal of 1138901 is 1098311.

It is a balanced prime because it is at equal distance from previous prime (1138883) and next prime (1138919).

It can be written as a sum of positive squares in only one way, i.e., 1002001 + 136900 = 1001^2 + 370^2 .

It is an emirp because it is prime and its reverse (1098311) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138901 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 (1138961) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569450 + 569451.

It is an arithmetic number, because the mean of its divisors is an integer number (569451).

2^1138901 is an apocalyptic number.

It is an amenable number.

1138901 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138901 is an equidigital number, since it uses as much as digits as its factorization.

1138901 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 216, while the sum is 23.

The square root of 1138901 is about 1067.1930472037. The cubic root of 1138901 is about 104.4308127759.

The spelling of 1138901 in words is "one million, one hundred thirty-eight thousand, nine hundred one".