1218258835986 has 64 divisors (see below), whose sum is σ = 2520025675776. Its totient is φ = 392361628800.

The previous prime is 1218258835931. The next prime is 1218258835993. The reversal of 1218258835986 is 6895388528121.

It is a super-3 number, since 3×1218258835986³ (a number of 37 digits) contains 333 as substring.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 148004491 + ... + 148012721.

It is an arithmetic number, because the mean of its divisors is an integer number (39375401184).

Almost surely, 2^{1218258835986} is an apocalyptic number.

1218258835986 is an abundant number, since it is smaller than the sum of its proper divisors (1301766839790).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1218258835986 is a wasteful number, since it uses less digits than its factorization.

1218258835986 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14007.

The product of its digits is 66355200, while the sum is 66.

The spelling of 1218258835986 in words is "one trillion, two hundred eighteen billion, two hundred fifty-eight million, eight hundred thirty-five thousand, nine hundred eighty-six".