1520042001493 has 2 divisors, whose sum is σ = 1520042001494. Its totient is φ = 1520042001492.

The previous prime is 1520042001397. The next prime is 1520042001559. The reversal of 1520042001493 is 3941002400251.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1162961657649 + 357080343844 = 1078407^2 + 597562^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1520042001493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1520042001293) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 760021000746 + 760021000747.

It is an arithmetic number, because the mean of its divisors is an integer number (760021000747).

Almost surely, 2^{1520042001493} is an apocalyptic number.

It is an amenable number.

1520042001493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1520042001493 is an equidigital number, since it uses as much as digits as its factorization.

1520042001493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 8640, while the sum is 31.

The spelling of 1520042001493 in words is "one trillion, five hundred twenty billion, forty-two million, one thousand, four hundred ninety-three".