1138288069 has 2 divisors, whose sum is σ = 1138288070. Its totient is φ = 1138288068.

The previous prime is 1138288037. The next prime is 1138288093. The reversal of 1138288069 is 9608828311.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1111889025 + 26399044 = 33345^2 + 5138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1138288069 - 2⁵ = 1138288037 is a prime.

It is a super-2 number, since 2×1138288069² = 2591399456055497522, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138288769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569144034 + 569144035.

It is an arithmetic number, because the mean of its divisors is an integer number (569144035).

Almost surely, 2^1138288069 is an apocalyptic number.

It is an amenable number.

1138288069 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138288069 is an equidigital number, since it uses as much as digits as its factorization.

1138288069 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165888, while the sum is 46.

The square root of 1138288069 is about 33738.5249973973. The cubic root of 1138288069 is about 1044.1207530624.

The spelling of 1138288069 in words is "one billion, one hundred thirty-eight million, two hundred eighty-eight thousand, sixty-nine".