1217418413 has 2 divisors, whose sum is σ = 1217418414. Its totient is φ = 1217418412.

The previous prime is 1217418401. The next prime is 1217418421. The reversal of 1217418413 is 3148147121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1178754889 + 38663524 = 34333^2 + 6218^2 .

It is a cyclic number.

It is not a de Polignac number, because 1217418413 - 2⁸ = 1217418157 is a prime.

It is a super-2 number, since 2×1217418413² = 2964215184622877138, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1217418413.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1217415413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 608709206 + 608709207.

It is an arithmetic number, because the mean of its divisors is an integer number (608709207).

Almost surely, 2^1217418413 is an apocalyptic number.

It is an amenable number.

1217418413 is a deficient number, since it is larger than the sum of its proper divisors (1).

1217418413 is an equidigital number, since it uses as much as digits as its factorization.

1217418413 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5376, while the sum is 32.

The square root of 1217418413 is about 34891.5235121655. The cubic root of 1217418413 is about 1067.7755087103.

The spelling of 1217418413 in words is "one billion, two hundred seventeen million, four hundred eighteen thousand, four hundred thirteen".