1244897694 has 32 divisors (see below), whose sum is σ = 2769876000. Its totient is φ = 414450432.

The previous prime is 1244897669. The next prime is 1244897707. The reversal of 1244897694 is 4967984421.

1244897694 is a `hidden beast` number, since 1 + 2 + 4 + 489 + 76 + 94 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a self number, because there is not a number n which added to its sum of digits gives 1244897694.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 30862 + ... + 58670.

It is an arithmetic number, because the mean of its divisors is an integer number (86558625).

Almost surely, 2^1244897694 is an apocalyptic number.

1244897694 is an abundant number, since it is smaller than the sum of its proper divisors (1524978306).

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

1244897694 is a wasteful number, since it uses less digits than its factorization.

1244897694 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28649 (or 28643 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 1244897694 is about 35283.1077712834. The cubic root of 1244897694 is about 1075.7496682519.

The spelling of 1244897694 in words is "one billion, two hundred forty-four million, eight hundred ninety-seven thousand, six hundred ninety-four".