18260498101840 has 80 divisors (see below), whose sum is σ = 44306512880256. Its totient is φ = 6985843673600.

The previous prime is 18260498101733. The next prime is 18260498101849. The reversal of 18260498101840 is 4810189406281.

It is a tau number, because it is divible by the number of its divisors (80).

It is a super-2 number, since 2×18260498101840² (a number of 27 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18260498101849) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16029570 + ... + 17130910.

Almost surely, 2^{18260498101840} is an apocalyptic number.

18260498101840 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

18260498101840 is an abundant number, since it is smaller than the sum of its proper divisors (26046014778416).

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

18260498101840 is a wasteful number, since it uses less digits than its factorization.

18260498101840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1110388 (or 1110382 counting only the distinct ones).

The product of its (nonzero) digits is 884736, while the sum is 52.

The spelling of 18260498101840 in words is "eighteen trillion, two hundred sixty billion, four hundred ninety-eight million, one hundred one thousand, eight hundred forty".