1148981 has 2 divisors, whose sum is σ = 1148982. Its totient is φ = 1148980.

The previous prime is 1148977. The next prime is 1148989. The reversal of 1148981 is 1898411.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1020100 + 128881 = 1010^2 + 359^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148981 - 2² = 1148977 is a prime.

It is a super-2 number, since 2×1148981² = 2640314676722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1148989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574490 + 574491.

It is an arithmetic number, because the mean of its divisors is an integer number (574491).

2^1148981 is an apocalyptic number.

It is an amenable number.

1148981 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148981 is an equidigital number, since it uses as much as digits as its factorization.

1148981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2304, while the sum is 32.

The square root of 1148981 is about 1071.9053129824. The cubic root of 1148981 is about 104.7380013711.

The spelling of 1148981 in words is "one million, one hundred forty-eight thousand, nine hundred eighty-one".