18519005952 has 108 divisors (see below), whose sum is σ = 54697452264. Its totient is φ = 6022410240.

The previous prime is 18519005881. The next prime is 18519006029. The reversal of 18519005952 is 25950091581.

18519005952 is a `hidden beast` number, since 1 + 8 + 51 + 9 + 0 + 0 + 595 + 2 = 666.

It is a super-2 number, since 2×18519005952² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 18519005898 and 18519005907.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 3558 + ... + 192485.

Almost surely, 2^18519005952 is an apocalyptic number.

18519005952 is a gapful number since it is divisible by the number (12) 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 18519005952, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (27348726132).

18519005952 is an abundant number, since it is smaller than the sum of its proper divisors (36178446312).

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

18519005952 is a wasteful number, since it uses less digits than its factorization.

18519005952 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 196106 (or 196089 counting only the distinct ones).

The product of its (nonzero) digits is 162000, while the sum is 45.

The spelling of 18519005952 in words is "eighteen billion, five hundred nineteen million, five thousand, nine hundred fifty-two".