1148974091 has 2 divisors, whose sum is σ = 1148974092. Its totient is φ = 1148974090.

The previous prime is 1148974033. The next prime is 1148974093. The reversal of 1148974091 is 1904798411.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1148974091 is a prime.

It is a Sophie Germain prime.

Together with 1148974093, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1148974093) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 574487045 + 574487046.

It is an arithmetic number, because the mean of its divisors is an integer number (574487046).

Almost surely, 2^1148974091 is an apocalyptic number.

1148974091 is a deficient number, since it is larger than the sum of its proper divisors (1).

1148974091 is an equidigital number, since it uses as much as digits as its factorization.

1148974091 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 72576, while the sum is 44.

The square root of 1148974091 is about 33896.5203376394. The cubic root of 1148974091 is about 1047.3779143548.

The spelling of 1148974091 in words is "one billion, one hundred forty-eight million, nine hundred seventy-four thousand, ninety-one".