1218680053 has 2 divisors, whose sum is σ = 1218680054. Its totient is φ = 1218680052.

The previous prime is 1218680033. The next prime is 1218680069. The reversal of 1218680053 is 3500868121.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1149074404 + 69605649 = 33898^2 + 8343^2 .

It is a cyclic number.

It is not a de Polignac number, because 1218680053 - 2²⁵ = 1185125621 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1218680033) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 609340026 + 609340027.

It is an arithmetic number, because the mean of its divisors is an integer number (609340027).

Almost surely, 2^1218680053 is an apocalyptic number.

It is an amenable number.

1218680053 is a deficient number, since it is larger than the sum of its proper divisors (1).

1218680053 is an equidigital number, since it uses as much as digits as its factorization.

1218680053 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 11520, while the sum is 34.

The square root of 1218680053 is about 34909.5982933061. The cubic root of 1218680053 is about 1068.1442351852.

The spelling of 1218680053 in words is "one billion, two hundred eighteen million, six hundred eighty thousand, fifty-three".