198145807078 has 16 divisors (see below), whose sum is σ = 298980118656. Its totient is φ = 98485934080.

The previous prime is 198145807043. The next prime is 198145807117. The reversal of 198145807078 is 870708541891.

It is a super-3 number, since 3×198145807078³ (a number of 35 digits) contains 333 as substring.

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, 2585958 + ... + 2661478.

It is an arithmetic number, because the mean of its divisors is an integer number (18686257416).

Almost surely, 2^198145807078 is an apocalyptic number.

198145807078 is a deficient number, since it is larger than the sum of its proper divisors (100834311578).

198145807078 is a wasteful number, since it uses less digits than its factorization.

198145807078 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83279.

The product of its (nonzero) digits is 4515840, while the sum is 58.

The spelling of 198145807078 in words is "one hundred ninety-eight billion, one hundred forty-five million, eight hundred seven thousand, seventy-eight".