1091485013 has 2 divisors, whose sum is σ = 1091485014. Its totient is φ = 1091485012.

The previous prime is 1091484991. The next prime is 1091485027. The reversal of 1091485013 is 3105841901.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 918877969 + 172607044 = 30313^2 + 13138^2 .

It is a cyclic number.

It is not a de Polignac number, because 1091485013 - 2²⁰ = 1090436437 is a prime.

It is a super-2 number, since 2×1091485013² = 2382679067207220338, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1091485513) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 545742506 + 545742507.

It is an arithmetic number, because the mean of its divisors is an integer number (545742507).

Almost surely, 2^1091485013 is an apocalyptic number.

It is an amenable number.

1091485013 is a deficient number, since it is larger than the sum of its proper divisors (1).

1091485013 is an equidigital number, since it uses as much as digits as its factorization.

1091485013 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4320, while the sum is 32.

The square root of 1091485013 is about 33037.6302570266. The cubic root of 1091485013 is about 1029.6096214402.

The spelling of 1091485013 in words is "one billion, ninety-one million, four hundred eighty-five thousand, thirteen".