1154393793809 has 2 divisors, whose sum is σ = 1154393793810. Its totient is φ = 1154393793808.

The previous prime is 1154393793779. The next prime is 1154393793829. The reversal of 1154393793809 is 9083973934511.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 904096705600 + 250297088209 = 950840^2 + 500297^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1154393793809 is a prime.

It is not a weakly prime, because it can be changed into another prime (1154393793829) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 577196896904 + 577196896905.

It is an arithmetic number, because the mean of its divisors is an integer number (577196896905).

Almost surely, 2^{1154393793809} is an apocalyptic number.

It is an amenable number.

1154393793809 is a deficient number, since it is larger than the sum of its proper divisors (1).

1154393793809 is an equidigital number, since it uses as much as digits as its factorization.

1154393793809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22044960, while the sum is 62.

The spelling of 1154393793809 in words is "one trillion, one hundred fifty-four billion, three hundred ninety-three million, seven hundred ninety-three thousand, eight hundred nine".