18519040002 has 16 divisors (see below), whose sum is σ = 37252175040. Its totient is φ = 6137330832.

The previous prime is 18519039983. The next prime is 18519040009. The reversal of 18519040002 is 20004091581.

It is a happy number.

It is not an unprimeable number, because it can be changed into a prime (18519040009) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 8919502 + ... + 8921577.

It is an arithmetic number, because the mean of its divisors is an integer number (2328260940).

Almost surely, 2^18519040002 is an apocalyptic number.

18519040002 is an abundant number, since it is smaller than the sum of its proper divisors (18733135038).

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

18519040002 is a wasteful number, since it uses less digits than its factorization.

18519040002 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17841257.

The product of its (nonzero) digits is 2880, while the sum is 30.

The spelling of 18519040002 in words is "eighteen billion, five hundred nineteen million, forty thousand, two".