1013778679 has 4 divisors (see below), whose sum is σ = 1014044976. Its totient is φ = 1013512384.

The previous prime is 1013778641. The next prime is 1013778721. The reversal of 1013778679 is 9768773101.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9768773101 = 84223 ⋅115987.

It is a cyclic number.

It is not a de Polignac number, because 1013778679 - 2²⁷ = 879560951 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013778379) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 127354 + ... + 135079.

It is an arithmetic number, because the mean of its divisors is an integer number (253511244).

Almost surely, 2^1013778679 is an apocalyptic number.

1013778679 is a deficient number, since it is larger than the sum of its proper divisors (266297).

1013778679 is an equidigital number, since it uses as much as digits as its factorization.

1013778679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266296.

The product of its (nonzero) digits is 444528, while the sum is 49.

The square root of 1013778679 is about 31839.8913157693. The cubic root of 1013778679 is about 1004.5719583413.

The spelling of 1013778679 in words is "one billion, thirteen million, seven hundred seventy-eight thousand, six hundred seventy-nine".