1148669881 has 2 divisors, whose sum is σ = 1148669882. Its totient is φ = 1148669880.

The previous prime is 1148669857. The next prime is 1148669891. The reversal of 1148669881 is 1889668411.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 822542400 + 326127481 = 28680^2 + 18059^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148669881 - 2⁵ = 1148669849 is a prime.

It is a super-2 number, since 2×1148669881² = 2638884991033108322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1148669831) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574334940 + 574334941.

It is an arithmetic number, because the mean of its divisors is an integer number (574334941).

Almost surely, 2^1148669881 is an apocalyptic number.

It is an amenable number.

1148669881 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148669881 is an equidigital number, since it uses as much as digits as its factorization.

1148669881 is an evil number, because the sum of its binary digits is even.

The product of its digits is 663552, while the sum is 52.

The square root of 1148669881 is about 33892.0327068177. The cubic root of 1148669881 is about 1047.2854692880.

The spelling of 1148669881 in words is "one billion, one hundred forty-eight million, six hundred sixty-nine thousand, eight hundred eighty-one".