1909714442 has 4 divisors (see below), whose sum is σ = 2864571666. Its totient is φ = 954857220.

The previous prime is 1909714439. The next prime is 1909714459. The reversal of 1909714442 is 2444179091.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 2444179091 = 2393 ⋅1021387.

It can be written as a sum of positive squares in only one way, i.e., 1311960841 + 597753601 = 36221^2 + 24449^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 1909714442.

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 as a sum of consecutive naturals, namely, 477428609 + ... + 477428612.

Almost surely, 2^1909714442 is an apocalyptic number.

1909714442 is a deficient number, since it is larger than the sum of its proper divisors (954857224).

1909714442 is an equidigital number, since it uses as much as digits as its factorization.

1909714442 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 954857223.

The product of its (nonzero) digits is 72576, while the sum is 41.

The square root of 1909714442 is about 43700.2796558558. The cubic root of 1909714442 is about 1240.6696092913.

The spelling of 1909714442 in words is "one billion, nine hundred nine million, seven hundred fourteen thousand, four hundred forty-two".