18260280016 has 40 divisors (see below), whose sum is σ = 38970345024. Its totient is φ = 8219535360.

The previous prime is 18260280013. The next prime is 18260280029. The reversal of 18260280016 is 61008206281.

It is a hoax number, since the sum of its digits (34) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18260280013) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 485521 + ... + 521776.

Almost surely, 2^18260280016 is an apocalyptic number.

18260280016 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

18260280016 is an abundant number, since it is smaller than the sum of its proper divisors (20710065008).

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

18260280016 is a wasteful number, since it uses less digits than its factorization.

18260280016 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1007419 (or 1007413 counting only the distinct ones).

The product of its (nonzero) digits is 9216, while the sum is 34.

Adding to 18260280016 its reverse (61008206281), we get a palindrome (79268486297).

The spelling of 18260280016 in words is "eighteen billion, two hundred sixty million, two hundred eighty thousand, sixteen".