1148230868509 has 4 divisors (see below), whose sum is σ = 1148293246716. Its totient is φ = 1148168490304.

The previous prime is 1148230868371. The next prime is 1148230868513. The reversal of 1148230868509 is 9058680328411.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 523582488100 + 624648380409 = 723590^2 + 790347^2 .

It is a cyclic number.

It is not a de Polignac number, because 1148230868509 - 2⁹ = 1148230867997 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 1148230868509.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1148230868579) 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, 31161484 + ... + 31198309.

It is an arithmetic number, because the mean of its divisors is an integer number (287073311679).

Almost surely, 2^{1148230868509} is an apocalyptic number.

It is an amenable number.

1148230868509 is a deficient number, since it is larger than the sum of its proper divisors (62378207).

1148230868509 is an equidigital number, since it uses as much as digits as its factorization.

1148230868509 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 62378206.

The product of its (nonzero) digits is 3317760, while the sum is 55.

The spelling of 1148230868509 in words is "one trillion, one hundred forty-eight billion, two hundred thirty million, eight hundred sixty-eight thousand, five hundred nine".