18866724058 has 32 divisors (see below), whose sum is σ = 34845189120. Its totient is φ = 7460691840.

The previous prime is 18866724053. The next prime is 18866724061. The reversal of 18866724058 is 85042766881.

It is not an unprimeable number, because it can be changed into a prime (18866724053) 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 15 ways as a sum of consecutive naturals, for example, 451558 + ... + 491566.

It is an arithmetic number, because the mean of its divisors is an integer number (1088912160).

Almost surely, 2^18866724058 is an apocalyptic number.

18866724058 is a deficient number, since it is larger than the sum of its proper divisors (15978465062).

18866724058 is a wasteful number, since it uses less digits than its factorization.

18866724058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42622.

The product of its (nonzero) digits is 5160960, while the sum is 55.

The spelling of 18866724058 in words is "eighteen billion, eight hundred sixty-six million, seven hundred twenty-four thousand, fifty-eight".