18494696892 has 96 divisors (see below), whose sum is σ = 50241364992. Its totient is φ = 5186313216.

The previous prime is 18494696867. The next prime is 18494696917. The reversal of 18494696892 is 29869649481.

It is an interprime number because it is at equal distance from previous prime (18494696867) and next prime (18494696917).

It is a congruent number.

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, 968218 + ... + 987134.

It is an arithmetic number, because the mean of its divisors is an integer number (523347552).

Almost surely, 2^18494696892 is an apocalyptic number.

18494696892 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18494696892, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25120682496).

18494696892 is an abundant number, since it is smaller than the sum of its proper divisors (31746668100).

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

18494696892 is a wasteful number, since it uses less digits than its factorization.

18494696892 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19147 (or 19145 counting only the distinct ones).

The product of its digits is 53747712, while the sum is 66.

The spelling of 18494696892 in words is "eighteen billion, four hundred ninety-four million, six hundred ninety-six thousand, eight hundred ninety-two".