1148027857 has 4 divisors (see below), whose sum is σ = 1163754340. Its totient is φ = 1132301376.

The previous prime is 1148027851. The next prime is 1148027887. The reversal of 1148027857 is 7587208411.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7587208411 = 25453 ⋅298087.

It can be written as a sum of positive squares in 2 ways, for example, as 992502016 + 155525841 = 31504^2 + 12471^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148027857 - 2³ = 1148027849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148027851) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7863132 + ... + 7863277.

It is an arithmetic number, because the mean of its divisors is an integer number (290938585).

Almost surely, 2^1148027857 is an apocalyptic number.

It is an amenable number.

1148027857 is a deficient number, since it is larger than the sum of its proper divisors (15726483).

1148027857 is an equidigital number, since it uses as much as digits as its factorization.

1148027857 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15726482.

The product of its (nonzero) digits is 125440, while the sum is 43.

The square root of 1148027857 is about 33882.5597763805. The cubic root of 1148027857 is about 1047.0903137934.

The spelling of 1148027857 in words is "one billion, one hundred forty-eight million, twenty-seven thousand, eight hundred fifty-seven".