1945163194 has 16 divisors (see below), whose sum is σ = 3166178400. Its totient is φ = 890912880.

The previous prime is 1945163167. The next prime is 1945163203. The reversal of 1945163194 is 4913615491.

It is a self number, because there is not a number n which added to its sum of digits gives 1945163194.

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 7 ways as a sum of consecutive naturals, for example, 282144 + ... + 288955.

It is an arithmetic number, because the mean of its divisors is an integer number (197886150).

Almost surely, 2^1945163194 is an apocalyptic number.

1945163194 is a deficient number, since it is larger than the sum of its proper divisors (1221015206).

1945163194 is a wasteful number, since it uses less digits than its factorization.

1945163194 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 571245.

The product of its digits is 116640, while the sum is 43.

The square root of 1945163194 is about 44104.0042853254. The cubic root of 1945163194 is about 1248.2991681732.

The spelling of 1945163194 in words is "one billion, nine hundred forty-five million, one hundred sixty-three thousand, one hundred ninety-four".