1073781679 has 4 divisors (see below), whose sum is σ = 1075533976. Its totient is φ = 1072029384.

The previous prime is 1073781671. The next prime is 1073781691. The reversal of 1073781679 is 9761873701.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 9761873701 = 3449 ⋅2830349.

It is a cyclic number.

It is not a de Polignac number, because 1073781679 - 2³ = 1073781671 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 (1073781671) 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, 875229 + ... + 876454.

It is an arithmetic number, because the mean of its divisors is an integer number (268883494).

Almost surely, 2^1073781679 is an apocalyptic number.

1073781679 is a deficient number, since it is larger than the sum of its proper divisors (1752297).

1073781679 is an equidigital number, since it uses as much as digits as its factorization.

1073781679 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1752296.

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

The square root of 1073781679 is about 32768.6081333950. The cubic root of 1073781679 is about 1024.0126694065.

It can be divided in two parts, 10737 and 81679, that added together give a square (92416 = 304²).

The spelling of 1073781679 in words is "one billion, seventy-three million, seven hundred eighty-one thousand, six hundred seventy-nine".