1209484745 has 16 divisors (see below), whose sum is σ = 1659329280. Its totient is φ = 829057344.

The previous prime is 1209484721. The next prime is 1209484763. The reversal of 1209484745 is 5474849021.

It is a cyclic number.

It is not a de Polignac number, because 1209484745 - 2⁸ = 1209484489 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1209484696 and 1209484705.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 135284 + ... + 143946.

It is an arithmetic number, because the mean of its divisors is an integer number (103708080).

Almost surely, 2^1209484745 is an apocalyptic number.

It is an amenable number.

1209484745 is a deficient number, since it is larger than the sum of its proper divisors (449844535).

1209484745 is an equidigital number, since it uses as much as digits as its factorization.

1209484745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12664.

The product of its (nonzero) digits is 322560, while the sum is 44.

The square root of 1209484745 is about 34777.6472033403. The cubic root of 1209484745 is about 1065.4509599528.

The spelling of 1209484745 in words is "one billion, two hundred nine million, four hundred eighty-four thousand, seven hundred forty-five".