18120019454 has 16 divisors (see below), whose sum is σ = 27849449376. Its totient is φ = 8836972800.

The previous prime is 18120019403. The next prime is 18120019469. The reversal of 18120019454 is 45491002181.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 363719 + ... + 410525.

It is an arithmetic number, because the mean of its divisors is an integer number (1740590586).

Almost surely, 2^18120019454 is an apocalyptic number.

18120019454 is a deficient number, since it is larger than the sum of its proper divisors (9729429922).

18120019454 is a wasteful number, since it uses less digits than its factorization.

18120019454 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51571.

The product of its (nonzero) digits is 11520, while the sum is 35.

The spelling of 18120019454 in words is "eighteen billion, one hundred twenty million, nineteen thousand, four hundred fifty-four".