1209794860 has 12 divisors (see below), whose sum is σ = 2540569248. Its totient is φ = 483917936.

The previous prime is 1209794857. The next prime is 1209794869. The reversal of 1209794860 is 684979021.

It is a self number, because there is not a number n which added to its sum of digits gives 1209794860.

It is not an unprimeable number, because it can be changed into a prime (1209794869) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 30244852 + ... + 30244891.

It is an arithmetic number, because the mean of its divisors is an integer number (211714104).

Almost surely, 2^1209794860 is an apocalyptic number.

1209794860 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1209794860 is an abundant number, since it is smaller than the sum of its proper divisors (1330774388).

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

1209794860 is a wasteful number, since it uses less digits than its factorization.

1209794860 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60489752 (or 60489750 counting only the distinct ones).

The product of its (nonzero) digits is 217728, while the sum is 46.

The square root of 1209794860 is about 34782.1054566856. The cubic root of 1209794860 is about 1065.5420136268.

The spelling of 1209794860 in words is "one billion, two hundred nine million, seven hundred ninety-four thousand, eight hundred sixty".