1148961457 has 12 divisors (see below), whose sum is σ = 1359203760. Its totient is φ = 968129736.

The previous prime is 1148961421. The next prime is 1148961461. The reversal of 1148961457 is 7541698411.

It is not a de Polignac number, because 1148961457 - 2⁷ = 1148961329 is a prime.

It is a super-2 number, since 2×1148961457² = 2640224859343125698, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148961467) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 195823 + ... + 201604.

It is an arithmetic number, because the mean of its divisors is an integer number (113266980).

Almost surely, 2^1148961457 is an apocalyptic number.

It is an amenable number.

1148961457 is a deficient number, since it is larger than the sum of its proper divisors (210242303).

1148961457 is an equidigital number, since it uses as much as digits as its factorization.

1148961457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 397500 (or 397493 counting only the distinct ones).

The product of its digits is 241920, while the sum is 46.

The square root of 1148961457 is about 33896.3339758151. Note that the first 3 decimals coincide. The cubic root of 1148961457 is about 1047.3740753877.

The spelling of 1148961457 in words is "one billion, one hundred forty-eight million, nine hundred sixty-one thousand, four hundred fifty-seven".