18253548040 has 192 divisors, whose sum is σ = 53818162560. Its totient is φ = 5436887040.

The previous prime is 18253548013. The next prime is 18253548059. The reversal of 18253548040 is 4084535281.

It is a Harshad number since it is a multiple of its sum of digits (40).

It is a junction number, because it is equal to n+sod(n) for n = 18253547984 and 18253548002.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 793095 + ... + 815785.

It is an arithmetic number, because the mean of its divisors is an integer number (280302930).

Almost surely, 2^18253548040 is an apocalyptic number.

18253548040 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 18253548040, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (26909081280).

18253548040 is an abundant number, since it is smaller than the sum of its proper divisors (35564614520).

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

18253548040 is a wasteful number, since it uses less digits than its factorization.

18253548040 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22752 (or 22735 counting only the distinct ones).

The product of its (nonzero) digits is 153600, while the sum is 40.

The spelling of 18253548040 in words is "eighteen billion, two hundred fifty-three million, five hundred forty-eight thousand, forty".