11858033309 has 2 divisors, whose sum is σ = 11858033310. Its totient is φ = 11858033308.

The previous prime is 11858033303. The next prime is 11858033333. The reversal of 11858033309 is 90333085811.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 7934890084 + 3923143225 = 89078^2 + 62635^2 .

It is an emirp because it is prime and its reverse (90333085811) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 11858033309 - 2³² = 7563066013 is a prime.

It is a super-2 number, since 2×11858033309² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (11858033303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 5929016654 + 5929016655.

It is an arithmetic number, because the mean of its divisors is an integer number (5929016655).

Almost surely, 2^11858033309 is an apocalyptic number.

It is an amenable number.

11858033309 is a deficient number, since it is larger than the sum of its proper divisors (1).

11858033309 is an equidigital number, since it uses as much as digits as its factorization.

11858033309 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 77760, while the sum is 41.

The spelling of 11858033309 in words is "eleven billion, eight hundred fifty-eight million, thirty-three thousand, three hundred nine".