18494161738128 has 40 divisors (see below), whose sum is σ = 53085093879200. Its totient is φ = 6164720579232.

The previous prime is 18494161738109. The next prime is 18494161738147. The reversal of 18494161738128 is 82183716149481.

18494161738128 is a `hidden beast` number, since 1 + 8 + 4 + 9 + 4 + 1 + 617 + 3 + 8 + 1 + 2 + 8 = 666.

It is an interprime number because it is at equal distance from previous prime (18494161738109) and next prime (18494161738147).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21405279358 + ... + 21405280221.

It is an arithmetic number, because the mean of its divisors is an integer number (1327127346980).

Almost surely, 2^{18494161738128} is an apocalyptic number.

18494161738128 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18494161738128 is an abundant number, since it is smaller than the sum of its proper divisors (34590932141072).

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

18494161738128 is a wasteful number, since it uses less digits than its factorization.

18494161738128 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42810559596 (or 42810559584 counting only the distinct ones).

The product of its digits is 18579456, while the sum is 63.

The spelling of 18494161738128 in words is "eighteen trillion, four hundred ninety-four billion, one hundred sixty-one million, seven hundred thirty-eight thousand, one hundred twenty-eight".