18454697616 has 160 divisors (see below), whose sum is σ = 52488390528. Its totient is φ = 5563514880.

The previous prime is 18454697579. The next prime is 18454697623. The reversal of 18454697616 is 61679645481.

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 31 ways as a sum of consecutive naturals, for example, 2237436 + ... + 2245668.

Almost surely, 2^18454697616 is an apocalyptic number.

18454697616 is a gapful number since it is divisible by the number (16) 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 18454697616, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26244195264).

18454697616 is an abundant number, since it is smaller than the sum of its proper divisors (34033692912).

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

18454697616 is a wasteful number, since it uses less digits than its factorization.

18454697616 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8369 (or 8363 counting only the distinct ones).

The product of its digits is 8709120, while the sum is 57.

The spelling of 18454697616 in words is "eighteen billion, four hundred fifty-four million, six hundred ninety-seven thousand, six hundred sixteen".