18026309280 has 768 divisors, whose sum is σ = 71693475840. Its totient is φ = 3715891200.

The previous prime is 18026309269. The next prime is 18026309281. The reversal of 18026309280 is 8290362081.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18026309281) by changing a digit.

It is a polite number, since it can be written in 127 ways as a sum of consecutive naturals, for example, 185838192 + ... + 185838288.

It is an arithmetic number, because the mean of its divisors is an integer number (93350880).

Almost surely, 2^18026309280 is an apocalyptic number.

18026309280 is a gapful number since it is divisible by the number (10) 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 18026309280, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (35846737920).

18026309280 is an abundant number, since it is smaller than the sum of its proper divisors (53667166560).

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

18026309280 is a wasteful number, since it uses less digits than its factorization.

18026309280 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 253 (or 245 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 39.

The spelling of 18026309280 in words is "eighteen billion, twenty-six million, three hundred nine thousand, two hundred eighty".