1944354194 has 4 divisors (see below), whose sum is σ = 2916531294. Its totient is φ = 972177096.

The previous prime is 1944354187. The next prime is 1944354229. The reversal of 1944354194 is 4914534491.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 1686334225 + 258019969 = 41065^2 + 16063^2 .

It is a Curzon number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 486088547 + ... + 486088550.

Almost surely, 2^1944354194 is an apocalyptic number.

1944354194 is a deficient number, since it is larger than the sum of its proper divisors (972177100).

1944354194 is an equidigital number, since it uses as much as digits as its factorization.

1944354194 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 972177099.

The product of its digits is 311040, while the sum is 44.

The square root of 1944354194 is about 44094.8318286849. The cubic root of 1944354194 is about 1248.1260868835.

It can be divided in two parts, 19443 and 54194, that added together give a palindrome (73637).

The spelling of 1944354194 in words is "one billion, nine hundred forty-four million, three hundred fifty-four thousand, one hundred ninety-four".