11091613 has 8 divisors (see below), whose sum is σ = 11983608. Its totient is φ = 10205184.

The previous prime is 11091593. The next prime is 11091617. The reversal of 11091613 is 31619011.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 2199289 + 8892324 = 1483^2 + 2982^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 11091613 - 2⁵ = 11091581 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (11091617) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3381 + ... + 5797.

It is an arithmetic number, because the mean of its divisors is an integer number (1497951).

Almost surely, 2^11091613 is an apocalyptic number.

11091613 is a gapful number since it is divisible by the number (13) formed by its first and last digit.

It is an amenable number.

11091613 is a deficient number, since it is larger than the sum of its proper divisors (891995).

11091613 is a wasteful number, since it uses less digits than its factorization.

11091613 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2783.

The product of its (nonzero) digits is 162, while the sum is 22.

The square root of 11091613 is about 3330.4073324445. The cubic root of 11091613 is about 223.0137134883.

The spelling of 11091613 in words is "eleven million, ninety-one thousand, six hundred thirteen".