1248268158 has 56 divisors (see below), whose sum is σ = 2814405048. Its totient is φ = 415040112.

The previous prime is 1248268157. The next prime is 1248268207. The reversal of 1248268158 is 8518628421.

1248268158 is a `hidden beast` number, since 12 + 482 + 6 + 8 + 158 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1248268157) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 761716 + ... + 763352.

It is an arithmetic number, because the mean of its divisors is an integer number (50257233).

Almost surely, 2^1248268158 is an apocalyptic number.

1248268158 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1248268158, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1407202524).

1248268158 is an abundant number, since it is smaller than the sum of its proper divisors (1566136890).

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

1248268158 is an equidigital number, since it uses as much as digits as its factorization.

1248268158 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2180 (or 2165 counting only the distinct ones).

The product of its digits is 245760, while the sum is 45.

The square root of 1248268158 is about 35330.8386257672. The cubic root of 1248268158 is about 1076.7196296903.

The spelling of 1248268158 in words is "one billion, two hundred forty-eight million, two hundred sixty-eight thousand, one hundred fifty-eight".