8911881149 has 2 divisors, whose sum is σ = 8911881150. Its totient is φ = 8911881148.

The previous prime is 8911881127. The next prime is 8911881169. The reversal of 8911881149 is 9411881198.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 6349699225 + 2562181924 = 79685^2 + 50618^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-8911881149 is a prime.

It is a super-2 number, since 2×8911881149² (a number of 21 digits) contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 8911881097 and 8911881106.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8911881109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4455940574 + 4455940575.

It is an arithmetic number, because the mean of its divisors is an integer number (4455940575).

Almost surely, 2^8911881149 is an apocalyptic number.

It is an amenable number.

8911881149 is a deficient number, since it is larger than the sum of its proper divisors (1).

8911881149 is an equidigital number, since it uses as much as digits as its factorization.

8911881149 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 165888, while the sum is 50.

The square root of 8911881149 is about 94402.7602827375. The cubic root of 8911881149 is about 2073.2728570056.

The spelling of 8911881149 in words is "eight billion, nine hundred eleven million, eight hundred eighty-one thousand, one hundred forty-nine".