1148643073 has 4 divisors (see below), whose sum is σ = 1148807088. Its totient is φ = 1148479060.

The previous prime is 1148643071. The next prime is 1148643077. The reversal of 1148643073 is 3703468411.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3703468411 = 17 ⋅217851083.

It is a cyclic number.

It is not a de Polignac number, because 1148643073 - 2¹ = 1148643071 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1148643071) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 71011 + ... + 85672.

It is an arithmetic number, because the mean of its divisors is an integer number (287201772).

Almost surely, 2^1148643073 is an apocalyptic number.

It is an amenable number.

1148643073 is a deficient number, since it is larger than the sum of its proper divisors (164015).

1148643073 is an equidigital number, since it uses as much as digits as its factorization.

1148643073 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 164014.

The product of its (nonzero) digits is 48384, while the sum is 37.

The square root of 1148643073 is about 33891.6372133304. The cubic root of 1148643073 is about 1047.2773219378.

The spelling of 1148643073 in words is "one billion, one hundred forty-eight million, six hundred forty-three thousand, seventy-three".