18199025782 has 16 divisors (see below), whose sum is σ = 31202889120. Its totient is φ = 7798442688.

The previous prime is 18199025773. The next prime is 18199025833. The reversal of 18199025782 is 28752099181.

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, 8098 + ... + 190954.

It is an arithmetic number, because the mean of its divisors is an integer number (1950180570).

Almost surely, 2^18199025782 is an apocalyptic number.

18199025782 is a deficient number, since it is larger than the sum of its proper divisors (13003863338).

18199025782 is a wasteful number, since it uses less digits than its factorization.

18199025782 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 189975.

The product of its (nonzero) digits is 725760, while the sum is 52.

The spelling of 18199025782 in words is "eighteen billion, one hundred ninety-nine million, twenty-five thousand, seven hundred eighty-two".