1138750271 has 2 divisors, whose sum is σ = 1138750272. Its totient is φ = 1138750270.

The previous prime is 1138750211. The next prime is 1138750273. The reversal of 1138750271 is 1720578311.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1138750271 is a prime.

It is a Sophie Germain prime.

Together with 1138750273, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1138750273) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 569375135 + 569375136.

It is an arithmetic number, because the mean of its divisors is an integer number (569375136).

Almost surely, 2^1138750271 is an apocalyptic number.

1138750271 is a deficient number, since it is larger than the sum of its proper divisors (1).

1138750271 is an equidigital number, since it uses as much as digits as its factorization.

1138750271 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 11760, while the sum is 35.

The square root of 1138750271 is about 33745.3740681593. The cubic root of 1138750271 is about 1044.2620557224.

The spelling of 1138750271 in words is "one billion, one hundred thirty-eight million, seven hundred fifty thousand, two hundred seventy-one".