1218488126198 has 32 divisors (see below), whose sum is σ = 2124406033920. Its totient is φ = 513318263040.

The previous prime is 1218488126131. The next prime is 1218488126201. The reversal of 1218488126198 is 8916218848121.

It is a Harshad number since it is a multiple of its sum of digits (59).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12135983 + ... + 12235973.

It is an arithmetic number, because the mean of its divisors is an integer number (66387688560).

Almost surely, 2^{1218488126198} is an apocalyptic number.

1218488126198 is a deficient number, since it is larger than the sum of its proper divisors (905917907722).

1218488126198 is a wasteful number, since it uses less digits than its factorization.

1218488126198 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 114812.

The product of its digits is 3538944, while the sum is 59.

The spelling of 1218488126198 in words is "one trillion, two hundred eighteen billion, four hundred eighty-eight million, one hundred twenty-six thousand, one hundred ninety-eight".