1091742713 has 4 divisors (see below), whose sum is σ = 1092426228. Its totient is φ = 1091059200.

The previous prime is 1091742697. The next prime is 1091742731. The reversal of 1091742713 is 3172471901.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3172471901 = 21011 ⋅150991.

It can be written as a sum of positive squares in 2 ways, for example, as 871902784 + 219839929 = 29528^2 + 14827^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091742713 - 2⁴ = 1091742697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1091742733) 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, 339356 + ... + 342557.

It is an arithmetic number, because the mean of its divisors is an integer number (273106557).

Almost surely, 2^1091742713 is an apocalyptic number.

It is an amenable number.

1091742713 is a deficient number, since it is larger than the sum of its proper divisors (683515).

1091742713 is an equidigital number, since it uses as much as digits as its factorization.

1091742713 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683514.

The product of its (nonzero) digits is 10584, while the sum is 35.

The square root of 1091742713 is about 33041.5301249806. The cubic root of 1091742713 is about 1029.6906454633.

The spelling of 1091742713 in words is "one billion, ninety-one million, seven hundred forty-two thousand, seven hundred thirteen".