1148128278 has 96 divisors (see below), whose sum is σ = 2620937088. Its totient is φ = 332467200.

The previous prime is 1148128277. The next prime is 1148128279. The reversal of 1148128278 is 8728218411.

It is an interprime number because it is at equal distance from previous prime (1148128277) and next prime (1148128279).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148128273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 8764273 + ... + 8764403.

It is an arithmetic number, because the mean of its divisors is an integer number (27301428).

Almost surely, 2^1148128278 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1148128278, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1310468544).

1148128278 is an abundant number, since it is smaller than the sum of its proper divisors (1472808810).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1148128278 is a wasteful number, since it uses less digits than its factorization.

1148128278 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 318 (or 281 counting only the distinct ones).

The product of its digits is 57344, while the sum is 42.

The square root of 1148128278 is about 33884.0416420474. The cubic root of 1148128278 is about 1047.1208434796.

The spelling of 1148128278 in words is "one billion, one hundred forty-eight million, one hundred twenty-eight thousand, two hundred seventy-eight".