1248999994 has 24 divisors (see below), whose sum is σ = 2063628000. Its totient is φ = 566534760.

The previous prime is 1248999991. The next prime is 1249000001. The reversal of 1248999994 is 4999998421.

It is not an unprimeable number, because it can be changed into a prime (1248999991) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 115587 + ... + 125929.

It is an arithmetic number, because the mean of its divisors is an integer number (85984500).

Almost surely, 2^1248999994 is an apocalyptic number.

1248999994 is a deficient number, since it is larger than the sum of its proper divisors (814628006).

1248999994 is a wasteful number, since it uses less digits than its factorization.

1248999994 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10866 (or 10855 counting only the distinct ones).

The product of its digits is 15116544, while the sum is 64.

The square root of 1248999994 is about 35341.1940092578. The cubic root of 1248999994 is about 1076.9300086966.

The spelling of 1248999994 in words is "one billion, two hundred forty-eight million, nine hundred ninety-nine thousand, nine hundred ninety-four".