1534731493 has 2 divisors, whose sum is σ = 1534731494. Its totient is φ = 1534731492.

The previous prime is 1534731463. The next prime is 1534731509. The reversal of 1534731493 is 3941374351.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1403101764 + 131629729 = 37458^2 + 11473^2 .

It is an emirp because it is prime and its reverse (3941374351) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1534731493 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1534731433) 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, 767365746 + 767365747.

It is an arithmetic number, because the mean of its divisors is an integer number (767365747).

Almost surely, 2^1534731493 is an apocalyptic number.

It is an amenable number.

1534731493 is a deficient number, since it is larger than the sum of its proper divisors (1).

1534731493 is an equidigital number, since it uses as much as digits as its factorization.

1534731493 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 136080, while the sum is 40.

The square root of 1534731493 is about 39175.6492352073. The cubic root of 1534731493 is about 1153.4819466037.

The spelling of 1534731493 in words is "one billion, five hundred thirty-four million, seven hundred thirty-one thousand, four hundred ninety-three".