537231649 has 2 divisors, whose sum is σ = 537231650. Its totient is φ = 537231648.

The previous prime is 537231599. The next prime is 537231659. The reversal of 537231649 is 946132735.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 467208225 + 70023424 = 21615^2 + 8368^2 .

It is a cyclic number.

It is not a de Polignac number, because 537231649 - 2¹⁹ = 536707361 is a prime.

It is not a weakly prime, because it can be changed into another prime (537231659) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268615824 + 268615825.

It is an arithmetic number, because the mean of its divisors is an integer number (268615825).

Almost surely, 2^537231649 is an apocalyptic number.

It is an amenable number.

537231649 is a deficient number, since it is larger than the sum of its proper divisors (1).

537231649 is an equidigital number, since it uses as much as digits as its factorization.

537231649 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 537231649 is about 23178.2581097027. The cubic root of 537231649 is about 812.9313333909.

The spelling of 537231649 in words is "five hundred thirty-seven million, two hundred thirty-one thousand, six hundred forty-nine".