1000779041923 has 4 divisors (see below), whose sum is σ = 1000799240560. Its totient is φ = 1000758843288.

The previous prime is 1000779041917. The next prime is 1000779041959. The reversal of 1000779041923 is 3291409770001.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 1000779041923 - 2⁹ = 1000779041411 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1000779041923.

It is not an unprimeable number, because it can be changed into a prime (1000779041903) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10024815 + ... + 10124152.

It is an arithmetic number, because the mean of its divisors is an integer number (250199810140).

Almost surely, 2^{1000779041923} is an apocalyptic number.

1000779041923 is a deficient number, since it is larger than the sum of its proper divisors (20198637).

1000779041923 is an equidigital number, since it uses as much as digits as its factorization.

1000779041923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20198636.

The product of its (nonzero) digits is 95256, while the sum is 43.

The spelling of 1000779041923 in words is "one trillion, seven hundred seventy-nine million, forty-one thousand, nine hundred twenty-three".