18454846956 has 96 divisors (see below), whose sum is σ = 53172134400. Its totient is φ = 4851270144.

The previous prime is 18454846931. The next prime is 18454846967. The reversal of 18454846956 is 65964845481.

It is a self number, because there is not a number n which added to its sum of digits gives 18454846956.

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, 307720 + ... + 362768.

It is an arithmetic number, because the mean of its divisors is an integer number (553876400).

Almost surely, 2^18454846956 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 18454846956, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26586067200).

18454846956 is an abundant number, since it is smaller than the sum of its proper divisors (34717287444).

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

18454846956 is a wasteful number, since it uses less digits than its factorization.

18454846956 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 55383 (or 55381 counting only the distinct ones).

The product of its digits is 33177600, while the sum is 60.

The spelling of 18454846956 in words is "eighteen billion, four hundred fifty-four million, eight hundred forty-six thousand, nine hundred fifty-six".