1138156027 has 2 divisors, whose sum is σ = 1138156028. Its totient is φ = 1138156026.

The previous prime is 1138156021. The next prime is 1138156037. The reversal of 1138156027 is 7206518311.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138156027 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1138155983 and 1138156001.

It is not a weakly prime, because it can be changed into another prime (1138156021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569078013 + 569078014.

It is an arithmetic number, because the mean of its divisors is an integer number (569078014).

Almost surely, 2^1138156027 is an apocalyptic number.

1138156027 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138156027 is an equidigital number, since it uses as much as digits as its factorization.

1138156027 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 10080, while the sum is 34.

The square root of 1138156027 is about 33736.5680975407. The cubic root of 1138156027 is about 1044.0803786536.

The spelling of 1138156027 in words is "one billion, one hundred thirty-eight million, one hundred fifty-six thousand, twenty-seven".