1209745204 has 24 divisors (see below), whose sum is σ = 2154852000. Its totient is φ = 594091680.

The previous prime is 1209745171. The next prime is 1209745213. The reversal of 1209745204 is 4025479021.

It is a self number, because there is not a number n which added to its sum of digits gives 1209745204.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 473322 + ... + 475870.

It is an arithmetic number, because the mean of its divisors is an integer number (89785500).

Almost surely, 2^1209745204 is an apocalyptic number.

It is an amenable number.

1209745204 is a deficient number, since it is larger than the sum of its proper divisors (945106796).

1209745204 is a wasteful number, since it uses less digits than its factorization.

1209745204 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4623 (or 4621 counting only the distinct ones).

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 1209745204 is about 34781.3916340333. The cubic root of 1209745204 is about 1065.5274350455.

The spelling of 1209745204 in words is "one billion, two hundred nine million, seven hundred forty-five thousand, two hundred four".