1148554269809 has 4 divisors (see below), whose sum is σ = 1148603691120. Its totient is φ = 1148504848500.

The previous prime is 1148554269803. The next prime is 1148554269817. The reversal of 1148554269809 is 9089624558411.

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 1148554269809 - 2³⁶ = 1079834793073 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1148554269803) 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, 24675779 + ... + 24722280.

It is an arithmetic number, because the mean of its divisors is an integer number (287150922780).

Almost surely, 2^{1148554269809} is an apocalyptic number.

It is an amenable number.

1148554269809 is a deficient number, since it is larger than the sum of its proper divisors (49421311).

1148554269809 is an equidigital number, since it uses as much as digits as its factorization.

1148554269809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49421310.

The product of its (nonzero) digits is 24883200, while the sum is 62.

The spelling of 1148554269809 in words is "one trillion, one hundred forty-eight billion, five hundred fifty-four million, two hundred sixty-nine thousand, eight hundred nine".