1217859353 has 2 divisors, whose sum is σ = 1217859354. Its totient is φ = 1217859352.

The previous prime is 1217859317. The next prime is 1217859371. The reversal of 1217859353 is 3539587121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1055730064 + 162129289 = 32492^2 + 12733^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217859353 - 2¹⁰ = 1217858329 is a prime.

It is not a weakly prime, because it can be changed into another prime (1217859053) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608929676 + 608929677.

It is an arithmetic number, because the mean of its divisors is an integer number (608929677).

Almost surely, 2^1217859353 is an apocalyptic number.

It is an amenable number.

1217859353 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217859353 is an equidigital number, since it uses as much as digits as its factorization.

1217859353 is an evil number, because the sum of its binary digits is even.

The product of its digits is 226800, while the sum is 44.

The square root of 1217859353 is about 34897.8416667851. The cubic root of 1217859353 is about 1067.9044066296.

The spelling of 1217859353 in words is "one billion, two hundred seventeen million, eight hundred fifty-nine thousand, three hundred fifty-three".