1945109294 has 16 divisors (see below), whose sum is σ = 2963098368. Its totient is φ = 957428472.

The previous prime is 1945109293. The next prime is 1945109297. The reversal of 1945109294 is 4929015491.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1945109293) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 264779 + ... + 272025.

It is an arithmetic number, because the mean of its divisors is an integer number (185193648).

Almost surely, 2^1945109294 is an apocalyptic number.

1945109294 is a deficient number, since it is larger than the sum of its proper divisors (1017989074).

1945109294 is a wasteful number, since it uses less digits than its factorization.

1945109294 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9319.

The product of its (nonzero) digits is 116640, while the sum is 44.

The square root of 1945109294 is about 44103.3932254651. The cubic root of 1945109294 is about 1248.2876380444.

The spelling of 1945109294 in words is "one billion, nine hundred forty-five million, one hundred nine thousand, two hundred ninety-four".