1909714444 has 72 divisors (see below), whose sum is σ = 3782615760. Its totient is φ = 842624640.

The previous prime is 1909714439. The next prime is 1909714459. The reversal of 1909714444 is 4444179091.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 1909714444.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 2795727 + ... + 2796409.

It is an arithmetic number, because the mean of its divisors is an integer number (52536330).

Almost surely, 2^1909714444 is an apocalyptic number.

It is an amenable number.

1909714444 is a deficient number, since it is larger than the sum of its proper divisors (1872901316).

1909714444 is a wasteful number, since it uses less digits than its factorization.

1909714444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 871 (or 858 counting only the distinct ones).

The product of its (nonzero) digits is 145152, while the sum is 43.

The square root of 1909714444 is about 43700.2796787389. The cubic root of 1909714444 is about 1240.6696097244.

The spelling of 1909714444 in words is "one billion, nine hundred nine million, seven hundred fourteen thousand, four hundred forty-four".