18618907466408 has 32 divisors (see below), whose sum is σ = 37602444712800. Its totient is φ = 8614378237248.

The previous prime is 18618907466387. The next prime is 18618907466417. The reversal of 18618907466408 is 80466470981681.

It is a happy 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 7 ways as a sum of consecutive naturals, for example, 1424328491 + ... + 1424341562.

It is an arithmetic number, because the mean of its divisors is an integer number (1175076397275).

Almost surely, 2^{18618907466408} is an apocalyptic number.

It is an amenable number.

18618907466408 is an abundant number, since it is smaller than the sum of its proper divisors (18983537246392).

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

18618907466408 is a wasteful number, since it uses less digits than its factorization.

18618907466408 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2848670121 (or 2848670117 counting only the distinct ones).

The product of its (nonzero) digits is 111476736, while the sum is 68.

The spelling of 18618907466408 in words is "eighteen trillion, six hundred eighteen billion, nine hundred seven million, four hundred sixty-six thousand, four hundred eight".