18199541458 has 16 divisors (see below), whose sum is σ = 31300847424. Its totient is φ = 7774395120.

The previous prime is 18199541441. The next prime is 18199541491. The reversal of 18199541458 is 85414599181.

It is a junction number, because it is equal to n+sod(n) for n = 18199541399 and 18199541408.

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, 2112913 + ... + 2121508.

It is an arithmetic number, because the mean of its divisors is an integer number (1956302964).

Almost surely, 2^18199541458 is an apocalyptic number.

18199541458 is a deficient number, since it is larger than the sum of its proper divisors (13101305966).

18199541458 is a wasteful number, since it uses less digits than its factorization.

18199541458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4234737.

The product of its digits is 2073600, while the sum is 55.

The spelling of 18199541458 in words is "eighteen billion, one hundred ninety-nine million, five hundred forty-one thousand, four hundred fifty-eight".