1213073905 has 8 divisors (see below), whose sum is σ = 1532304000. Its totient is φ = 919382256.

The previous prime is 1213073893. The next prime is 1213073921. The reversal of 1213073905 is 5093703121.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1213073905 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 6384505 + ... + 6384694.

It is an arithmetic number, because the mean of its divisors is an integer number (191538000).

Almost surely, 2^1213073905 is an apocalyptic number.

It is an amenable number.

1213073905 is a deficient number, since it is larger than the sum of its proper divisors (319230095).

1213073905 is a wasteful number, since it uses less digits than its factorization.

1213073905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12769223.

The product of its (nonzero) digits is 5670, while the sum is 31.

The square root of 1213073905 is about 34829.2105135905. The cubic root of 1213073905 is about 1066.5038318599.

The spelling of 1213073905 in words is "one billion, two hundred thirteen million, seventy-three thousand, nine hundred five".