1540456330493 has 2 divisors, whose sum is σ = 1540456330494. Its totient is φ = 1540456330492.

The previous prime is 1540456330489. The next prime is 1540456330541. The reversal of 1540456330493 is 3940336540451.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1459597427044 + 80858903449 = 1208138^2 + 284357^2 .

It is a cyclic number.

It is not a de Polignac number, because 1540456330493 - 2² = 1540456330489 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1540456330423) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 770228165246 + 770228165247.

It is an arithmetic number, because the mean of its divisors is an integer number (770228165247).

Almost surely, 2^{1540456330493} is an apocalyptic number.

It is an amenable number.

1540456330493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1540456330493 is an equidigital number, since it uses as much as digits as its factorization.

1540456330493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2332800, while the sum is 47.

The spelling of 1540456330493 in words is "one trillion, five hundred forty billion, four hundred fifty-six million, three hundred thirty thousand, four hundred ninety-three".