18859141908 has 36 divisors (see below), whose sum is σ = 47721829428. Its totient is φ = 6279772800.

The previous prime is 18859141897. The next prime is 18859141937. The reversal of 18859141908 is 80914195881.

18859141908 is a `hidden beast` number, since 1 + 8 + 8 + 591 + 41 + 9 + 0 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 4108553604 + 14750588304 = 64098^2 + 121452^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 240543 + ... + 309158.

It is an arithmetic number, because the mean of its divisors is an integer number (1325606373).

Almost surely, 2^18859141908 is an apocalyptic number.

18859141908 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

18859141908 is an abundant number, since it is smaller than the sum of its proper divisors (28862687520).

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

18859141908 is a wasteful number, since it uses less digits than its factorization.

18859141908 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 550664 (or 550659 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 54.

The spelling of 18859141908 in words is "eighteen billion, eight hundred fifty-nine million, one hundred forty-one thousand, nine hundred eight".