1213073893 has 2 divisors, whose sum is σ = 1213073894. Its totient is φ = 1213073892.

The previous prime is 1213073863. The next prime is 1213073921. The reversal of 1213073893 is 3983703121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149345604 + 63728289 = 33902^2 + 7983^2 .

It is an emirp because it is prime and its reverse (3983703121) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1213073893 - 2²⁹ = 676202981 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1213073833) by changing a digit.

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 as a sum of consecutive naturals, namely, 606536946 + 606536947.

It is an arithmetic number, because the mean of its divisors is an integer number (606536947).

Almost surely, 2^1213073893 is an apocalyptic number.

It is an amenable number.

1213073893 is a deficient number, since it is larger than the sum of its proper divisors (1).

1213073893 is an equidigital number, since it uses as much as digits as its factorization.

1213073893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 27216, while the sum is 37.

The square root of 1213073893 is about 34829.2103413213. The cubic root of 1213073893 is about 1066.5038283432.

The spelling of 1213073893 in words is "one billion, two hundred thirteen million, seventy-three thousand, eight hundred ninety-three".