18078205254 has 32 divisors (see below), whose sum is σ = 37997203200. Its totient is φ = 5726845152.

The previous prime is 18078205237. The next prime is 18078205261. The reversal of 18078205254 is 45250287081.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 937354 + ... + 956445.

It is an arithmetic number, because the mean of its divisors is an integer number (1187412600).

Almost surely, 2^18078205254 is an apocalyptic number.

18078205254 is an abundant number, since it is smaller than the sum of its proper divisors (19918997946).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

18078205254 is a wasteful number, since it uses less digits than its factorization.

18078205254 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1893884.

The product of its (nonzero) digits is 179200, while the sum is 42.

The spelling of 18078205254 in words is "eighteen billion, seventy-eight million, two hundred five thousand, two hundred fifty-four".