4545194 has 4 divisors (see below), whose sum is σ = 6817794. Its totient is φ = 2272596.

The previous prime is 4545193. The next prime is 4545197. The reversal of 4545194 is 4915454.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4915454 = 2 ⋅2457727.

It can be written as a sum of positive squares in only one way, i.e., 3667225 + 877969 = 1915^2 + 937^2 .

It is an Ulam number.

It is a plaindrome in base 16.

It is a self number, because there is not a number n which added to its sum of digits gives 4545194.

It is not an unprimeable number, because it can be changed into a prime (4545193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1136297 + ... + 1136300.

Almost surely, 2^4545194 is an apocalyptic number.

4545194 is a deficient number, since it is larger than the sum of its proper divisors (2272600).

4545194 is a wasteful number, since it uses less digits than its factorization.

4545194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2272599.

The product of its digits is 14400, while the sum is 32.

The square root of 4545194 is about 2131.9460593552. The cubic root of 4545194 is about 165.6472161489.

The spelling of 4545194 in words is "four million, five hundred forty-five thousand, one hundred ninety-four".