1148640873 has 4 divisors (see below), whose sum is σ = 1531521168. Its totient is φ = 765760580.

The previous prime is 1148640847. The next prime is 1148640929. The reversal of 1148640873 is 3780468411.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1148640873 - 2⁶ = 1148640809 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1148640833) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 191440143 + ... + 191440148.

It is an arithmetic number, because the mean of its divisors is an integer number (382880292).

Almost surely, 2^1148640873 is an apocalyptic number.

It is an amenable number.

1148640873 is a deficient number, since it is larger than the sum of its proper divisors (382880295).

1148640873 is an equidigital number, since it uses as much as digits as its factorization.

1148640873 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 382880294.

The product of its (nonzero) digits is 129024, while the sum is 42.

The square root of 1148640873 is about 33891.6047569306. The cubic root of 1148640873 is about 1047.2766533194.

The spelling of 1148640873 in words is "one billion, one hundred forty-eight million, six hundred forty thousand, eight hundred seventy-three".