1249993750 has 24 divisors (see below), whose sum is σ = 2343600000. Its totient is φ = 499995000.

The previous prime is 1249993729. The next prime is 1249993763. The reversal of 1249993750 is 573999421.

It is a junction number, because it is equal to n+sod(n) for n = 1249993694 and 1249993703.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 93750 + ... + 106249.

It is an arithmetic number, because the mean of its divisors is an integer number (97650000).

Almost surely, 2^1249993750 is an apocalyptic number.

1249993750 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1249993750 is a deficient number, since it is larger than the sum of its proper divisors (1093606250).

1249993750 is an frugal number, since it uses more digits than its factorization.

1249993750 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 200026 (or 200006 counting only the distinct ones).

The product of its (nonzero) digits is 612360, while the sum is 49.

The square root of 1249993750 is about 35355.2506708692. The cubic root of 1249993750 is about 1077.2155496507.

The spelling of 1249993750 in words is "one billion, two hundred forty-nine million, nine hundred ninety-three thousand, seven hundred fifty".