545145194 has 16 divisors (see below), whose sum is σ = 898572096. Its totient is φ = 245983200.

The previous prime is 545145193. The next prime is 545145221. The reversal of 545145194 is 491541545.

It is not an unprimeable number, because it can be changed into a prime (545145193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 87422 + ... + 93449.

It is an arithmetic number, because the mean of its divisors is an integer number (56160756).

Almost surely, 2^545145194 is an apocalyptic number.

545145194 is a deficient number, since it is larger than the sum of its proper divisors (353426902).

545145194 is a wasteful number, since it uses less digits than its factorization.

545145194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 181021.

The product of its digits is 72000, while the sum is 38.

The square root of 545145194 is about 23348.3445665854. The cubic root of 545145194 is about 816.9034481727.

It can be divided in two parts, 5451451 and 94, that added together give a palindrome (5451545).

The spelling of 545145194 in words is "five hundred forty-five million, one hundred forty-five thousand, one hundred ninety-four".