18629941918 has 16 divisors (see below), whose sum is σ = 32020439040. Its totient is φ = 7963411896.

The previous prime is 18629941867. The next prime is 18629941937. The reversal of 18629941918 is 81914992681.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1731858 + ... + 1742581.

It is an arithmetic number, because the mean of its divisors is an integer number (2001277440).

Almost surely, 2^18629941918 is an apocalyptic number.

18629941918 is a deficient number, since it is larger than the sum of its proper divisors (13390497122).

18629941918 is a wasteful number, since it uses less digits than its factorization.

18629941918 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3474831.

The product of its digits is 2239488, while the sum is 58.

The spelling of 18629941918 in words is "eighteen billion, six hundred twenty-nine million, nine hundred forty-one thousand, nine hundred eighteen".