1149838171 has 2 divisors, whose sum is σ = 1149838172. Its totient is φ = 1149838170.

The previous prime is 1149838169. The next prime is 1149838199. The reversal of 1149838171 is 1718389411.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1149838171 - 2¹ = 1149838169 is a prime.

Together with 1149838169, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (1149838141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574919085 + 574919086.

It is an arithmetic number, because the mean of its divisors is an integer number (574919086).

Almost surely, 2^1149838171 is an apocalyptic number.

1149838171 is a deficient number, since it is larger than the sum of its proper divisors (1).

1149838171 is an equidigital number, since it uses as much as digits as its factorization.

1149838171 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 48384, while the sum is 43.

The square root of 1149838171 is about 33909.2637932468. The cubic root of 1149838171 is about 1047.6404069380.

The spelling of 1149838171 in words is "one billion, one hundred forty-nine million, eight hundred thirty-eight thousand, one hundred seventy-one".