18898512958 has 16 divisors (see below), whose sum is σ = 30722821920. Its totient is φ = 8666832096.

The previous prime is 18898512949. The next prime is 18898512959. The reversal of 18898512958 is 85921589881.

It is a self number, because there is not a number n which added to its sum of digits gives 18898512958.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18898512959) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2310778 + ... + 2318941.

It is an arithmetic number, because the mean of its divisors is an integer number (1920176370).

Almost surely, 2^18898512958 is an apocalyptic number.

18898512958 is a deficient number, since it is larger than the sum of its proper divisors (11824308962).

18898512958 is a wasteful number, since it uses less digits than its factorization.

18898512958 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4629891.

The product of its digits is 16588800, while the sum is 64.

The spelling of 18898512958 in words is "eighteen billion, eight hundred ninety-eight million, five hundred twelve thousand, nine hundred fifty-eight".