1218602606138 has 64 divisors (see below), whose sum is σ = 1994142758400. Its totient is φ = 556734393600.

The previous prime is 1218602606129. The next prime is 1218602606153. The reversal of 1218602606138 is 8316062068121.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 260438483 + ... + 260443161.

It is an arithmetic number, because the mean of its divisors is an integer number (31158480600).

Almost surely, 2^{1218602606138} is an apocalyptic number.

1218602606138 is a deficient number, since it is larger than the sum of its proper divisors (775540152262).

1218602606138 is a wasteful number, since it uses less digits than its factorization.

1218602606138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6767.

The product of its (nonzero) digits is 165888, while the sum is 44.

The spelling of 1218602606138 in words is "one trillion, two hundred eighteen billion, six hundred two million, six hundred six thousand, one hundred thirty-eight".