1138873271 has 2 divisors, whose sum is σ = 1138873272. Its totient is φ = 1138873270.

The previous prime is 1138873261. The next prime is 1138873387. The reversal of 1138873271 is 1723788311.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1138873271 - 2¹⁸ = 1138611127 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138873201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569436635 + 569436636.

It is an arithmetic number, because the mean of its divisors is an integer number (569436636).

Almost surely, 2^1138873271 is an apocalyptic number.

1138873271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138873271 is an equidigital number, since it uses as much as digits as its factorization.

1138873271 is an evil number, because the sum of its binary digits is even.

The product of its digits is 56448, while the sum is 41.

The square root of 1138873271 is about 33747.1964909680. The cubic root of 1138873271 is about 1044.2996523790.

The spelling of 1138873271 in words is "one billion, one hundred thirty-eight million, eight hundred seventy-three thousand, two hundred seventy-one".