18620661882 has 8 divisors (see below), whose sum is σ = 37241323776. Its totient is φ = 6206887292.

The previous prime is 18620661877. The next prime is 18620661973. The reversal of 18620661882 is 28816602681.

It is a happy number.

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

18620661882 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1551721818 + ... + 1551721829.

It is an arithmetic number, because the mean of its divisors is an integer number (4655165472).

Almost surely, 2^18620661882 is an apocalyptic number.

18620661882 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

18620661882 is a wasteful number, since it uses less digits than its factorization.

18620661882 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3103443652.

The product of its (nonzero) digits is 442368, while the sum is 48.

The spelling of 18620661882 in words is "eighteen billion, six hundred twenty million, six hundred sixty-one thousand, eight hundred eighty-two".