18955045982 has 8 divisors (see below), whose sum is σ = 29668767696. Its totient is φ = 9065456752.

The previous prime is 18955045973. The next prime is 18955045987. The reversal of 18955045982 is 28954055981.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18955045987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 206033063 + ... + 206033154.

It is an arithmetic number, because the mean of its divisors is an integer number (3708595962).

Almost surely, 2^18955045982 is an apocalyptic number.

18955045982 is a deficient number, since it is larger than the sum of its proper divisors (10713721714).

18955045982 is a wasteful number, since it uses less digits than its factorization.

18955045982 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 412066242.

The product of its (nonzero) digits is 5184000, while the sum is 56.

Subtracting 18955045982 from its reverse (28954055981), we obtain a palindrome (9999009999).

It can be divided in two parts, 189550 and 45982, that added together give a palindrome (235532).

The spelling of 18955045982 in words is "eighteen billion, nine hundred fifty-five million, forty-five thousand, nine hundred eighty-two".