1218258341 has 2 divisors, whose sum is σ = 1218258342. Its totient is φ = 1218258340.

The previous prime is 1218258281. The next prime is 1218258401. The reversal of 1218258341 is 1438528121.

It is a balanced prime because it is at equal distance from previous prime (1218258281) and next prime (1218258401).

It can be written as a sum of positive squares in only one way, i.e., 1146093316 + 72165025 = 33854^2 + 8495^2 .

It is a cyclic number.

It is not a de Polignac number, because 1218258341 - 2⁶ = 1218258277 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1218248341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609129170 + 609129171.

It is an arithmetic number, because the mean of its divisors is an integer number (609129171).

Almost surely, 2^1218258341 is an apocalyptic number.

It is an amenable number.

1218258341 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218258341 is an equidigital number, since it uses as much as digits as its factorization.

1218258341 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15360, while the sum is 35.

The square root of 1218258341 is about 34903.5577126459. The cubic root of 1218258341 is about 1068.0210141072.

The spelling of 1218258341 in words is "one billion, two hundred eighteen million, two hundred fifty-eight thousand, three hundred forty-one".