1248940818 has 12 divisors (see below), whose sum is σ = 2706038478. Its totient is φ = 416313600.

The previous prime is 1248940801. The next prime is 1248940829. The reversal of 1248940818 is 8180498421.

It can be written as a sum of positive squares in only one way, i.e., 1087218729 + 161722089 = 32973^2 + 12717^2 .

It is an unprimeable number.

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 5 ways as a sum of consecutive naturals, for example, 34692783 + ... + 34692818.

Almost surely, 2^1248940818 is an apocalyptic number.

1248940818 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

1248940818 is an abundant number, since it is smaller than the sum of its proper divisors (1457097660).

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

1248940818 is a wasteful number, since it uses less digits than its factorization.

1248940818 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 69385609 (or 69385606 counting only the distinct ones).

The product of its (nonzero) digits is 147456, while the sum is 45.

The square root of 1248940818 is about 35340.3567893704. The cubic root of 1248940818 is about 1076.9130005789.

The spelling of 1248940818 in words is "one billion, two hundred forty-eight million, nine hundred forty thousand, eight hundred eighteen".