18269992260 has 240 divisors, whose sum is σ = 64972353600. Its totient is φ = 4260439296.

The previous prime is 18269992253. The next prime is 18269992267. The reversal of 18269992260 is 6229996281.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (18269992253) and next prime (18269992267).

It is a Harshad number since it is a multiple of its sum of digits (54).

It is a junction number, because it is equal to n+sod(n) for n = 18269992197 and 18269992206.

It is not an unprimeable number, because it can be changed into a prime (18269992267) by changing a digit.

It is a polite number, since it can be written in 79 ways as a sum of consecutive naturals, for example, 377311 + ... + 422969.

It is an arithmetic number, because the mean of its divisors is an integer number (270718140).

Almost surely, 2^18269992260 is an apocalyptic number.

18269992260 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 18269992260, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (32486176800).

18269992260 is an abundant number, since it is smaller than the sum of its proper divisors (46702361340).

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

18269992260 is a wasteful number, since it uses less digits than its factorization.

18269992260 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 45712 (or 45701 counting only the distinct ones).

The product of its (nonzero) digits is 1679616, while the sum is 54.

The spelling of 18269992260 in words is "eighteen billion, two hundred sixty-nine million, nine hundred ninety-two thousand, two hundred sixty".