198402018458 has 32 divisors (see below), whose sum is σ = 341505331200. Its totient is φ = 84683155824.

The previous prime is 198402018433. The next prime is 198402018509. The reversal of 198402018458 is 854810204891.

198402018458 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 15 ways as a sum of consecutive naturals, for example, 3930383 + ... + 3980541.

It is an arithmetic number, because the mean of its divisors is an integer number (10672041600).

Almost surely, 2^198402018458 is an apocalyptic number.

198402018458 is a deficient number, since it is larger than the sum of its proper divisors (143103312742).

198402018458 is a wasteful number, since it uses less digits than its factorization.

198402018458 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 51314.

The product of its (nonzero) digits is 737280, while the sum is 50.

The spelling of 198402018458 in words is "one hundred ninety-eight billion, four hundred two million, eighteen thousand, four hundred fifty-eight".