18425396064 has 96 divisors (see below), whose sum is σ = 50037976800. Its totient is φ = 5932544000.

The previous prime is 18425396027. The next prime is 18425396081. The reversal of 18425396064 is 46069352481.

It is a tau number, because it is divible by the number of its divisors (96).

It is a Harshad number since it is a multiple of its sum of digits (48).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 374362 + ... + 420710.

It is an arithmetic number, because the mean of its divisors is an integer number (521228925).

Almost surely, 2^18425396064 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 18425396064, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (25018988400).

18425396064 is an abundant number, since it is smaller than the sum of its proper divisors (31612580736).

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

18425396064 is a wasteful number, since it uses less digits than its factorization.

18425396064 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46504 (or 46496 counting only the distinct ones).

The product of its (nonzero) digits is 1244160, while the sum is 48.

The spelling of 18425396064 in words is "eighteen billion, four hundred twenty-five million, three hundred ninety-six thousand, sixty-four".