18349740486 has 160 divisors (see below), whose sum is σ = 52514542080. Its totient is φ = 4649788800.

The previous prime is 18349740467. The next prime is 18349740569. The reversal of 18349740486 is 68404794381.

18349740486 is a `hidden beast` number, since 1 + 8 + 34 + 97 + 40 + 486 = 666.

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a Curzon number.

It is a congruent number.

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 79 ways as a sum of consecutive naturals, for example, 493495 + ... + 529373.

It is an arithmetic number, because the mean of its divisors is an integer number (328215888).

Almost surely, 2^18349740486 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18349740486, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26257271040).

18349740486 is an abundant number, since it is smaller than the sum of its proper divisors (34164801594).

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

18349740486 is a wasteful number, since it uses less digits than its factorization.

18349740486 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 35952 (or 35943 counting only the distinct ones).

The product of its (nonzero) digits is 4644864, while the sum is 54.

The spelling of 18349740486 in words is "eighteen billion, three hundred forty-nine million, seven hundred forty thousand, four hundred eighty-six".