18341463504 has 160 divisors (see below), whose sum is σ = 59020222464. Its totient is φ = 4778933760.

The previous prime is 18341463493. The next prime is 18341463527. The reversal of 18341463504 is 40536414381.

It is a happy number.

It is a Harshad number since it is a multiple of its sum of digits (39).

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, 337249 + ... + 387839.

Almost surely, 2^18341463504 is an apocalyptic number.

18341463504 is a gapful number since it is divisible by the number (14) 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 18341463504, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (29510111232).

18341463504 is an abundant number, since it is smaller than the sum of its proper divisors (40678758960).

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

18341463504 is a wasteful number, since it uses less digits than its factorization.

18341463504 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 50705 (or 50699 counting only the distinct ones).

The product of its (nonzero) digits is 138240, while the sum is 39.

Adding to 18341463504 its reverse (40536414381), we get a palindrome (58877877885).

The spelling of 18341463504 in words is "eighteen billion, three hundred forty-one million, four hundred sixty-three thousand, five hundred four".