18288949248 has 144 divisors (see below), whose sum is σ = 55929968640. Its totient is φ = 5737611264.

The previous prime is 18288949247. The next prime is 18288949249. The reversal of 18288949248 is 84294988281.

18288949248 is a `hidden beast` number, since 1 + 8 + 28 + 89 + 492 + 48 = 666.

It is an interprime number because it is at equal distance from previous prime (18288949247) and next prime (18288949249).

It is a tau number, because it is divible by the number of its divisors (144).

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18288949241) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 284161 + ... + 342527.

It is an arithmetic number, because the mean of its divisors is an integer number (388402560).

Almost surely, 2^18288949248 is an apocalyptic number.

18288949248 is a gapful number since it is divisible by the number (18) 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 18288949248, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27964984320).

18288949248 is an abundant number, since it is smaller than the sum of its proper divisors (37641019392).

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

18288949248 is a wasteful number, since it uses less digits than its factorization.

18288949248 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58412 (or 58389 counting only the distinct ones).

The product of its digits is 21233664, while the sum is 63.

The spelling of 18288949248 in words is "eighteen billion, two hundred eighty-eight million, nine hundred forty-nine thousand, two hundred forty-eight".