18893051435909 has 16 divisors (see below), whose sum is σ = 21921894384768. Its totient is φ = 15946834286592.

The previous prime is 18893051435891. The next prime is 18893051435911. The reversal of 18893051435909 is 90953415039881.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-18893051435909 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18893051435509) by changing a digit.

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, 5593964 + ... + 8311349.

It is an arithmetic number, because the mean of its divisors is an integer number (1370118399048).

Almost surely, 2^{18893051435909} is an apocalyptic number.

It is an amenable number.

18893051435909 is a deficient number, since it is larger than the sum of its proper divisors (3028842948859).

18893051435909 is a wasteful number, since it uses less digits than its factorization.

18893051435909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13908284.

The product of its (nonzero) digits is 41990400, while the sum is 65.

The spelling of 18893051435909 in words is "eighteen trillion, eight hundred ninety-three billion, fifty-one million, four hundred thirty-five thousand, nine hundred nine".