18252205038 has 64 divisors (see below), whose sum is σ = 41417421120. Its totient is φ = 5956747776.

The previous prime is 18252205009. The next prime is 18252205061. The reversal of 18252205038 is 83050225281.

18252205038 is a `hidden beast` number, since 1 + 82 + 52 + 20 + 503 + 8 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 18252204993 and 18252205011.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 523156 + ... + 556952.

It is an arithmetic number, because the mean of its divisors is an integer number (647147205).

Almost surely, 2^18252205038 is an apocalyptic number.

18252205038 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 18252205038, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (20708710560).

18252205038 is an abundant number, since it is smaller than the sum of its proper divisors (23165216082).

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

18252205038 is a wasteful number, since it uses less digits than its factorization.

18252205038 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34018 (or 34012 counting only the distinct ones).

The product of its (nonzero) digits is 38400, while the sum is 36.

The spelling of 18252205038 in words is "eighteen billion, two hundred fifty-two million, two hundred five thousand, thirty-eight".