18212605087 has 8 divisors (see below), whose sum is σ = 19357262496. Its totient is φ = 17076095232.

The previous prime is 18212605079. The next prime is 18212605111. The reversal of 18212605087 is 78050621281.

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

It is a cyclic number.

It is not a de Polignac number, because 18212605087 - 2³ = 18212605079 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (18212605007) by changing a digit.

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, 2032278 + ... + 2041219.

It is an arithmetic number, because the mean of its divisors is an integer number (2419657812).

Almost surely, 2^18212605087 is an apocalyptic number.

18212605087 is a gapful number since it is divisible by the number (17) formed by its first and last digit.

18212605087 is a deficient number, since it is larger than the sum of its proper divisors (1144657409).

18212605087 is a wasteful number, since it uses less digits than its factorization.

18212605087 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4073777.

The product of its (nonzero) digits is 53760, while the sum is 40.

The spelling of 18212605087 in words is "eighteen billion, two hundred twelve million, six hundred five thousand, eighty-seven".