537989209 has 2 divisors, whose sum is σ = 537989210. Its totient is φ = 537989208.

The previous prime is 537989201. The next prime is 537989227. The reversal of 537989209 is 902989735.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 526564809 + 11424400 = 22947^2 + 3380^2 .

It is a cyclic number.

It is not a de Polignac number, because 537989209 - 2³ = 537989201 is a prime.

It is not a weakly prime, because it can be changed into another prime (537989201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 268994604 + 268994605.

It is an arithmetic number, because the mean of its divisors is an integer number (268994605).

Almost surely, 2^537989209 is an apocalyptic number.

It is an amenable number.

537989209 is a deficient number, since it is larger than the sum of its proper divisors (1).

537989209 is an equidigital number, since it uses as much as digits as its factorization.

537989209 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1224720, while the sum is 52.

The square root of 537989209 is about 23194.5943917974. The cubic root of 537989209 is about 813.3132636176.

The spelling of 537989209 in words is "five hundred thirty-seven million, nine hundred eighty-nine thousand, two hundred nine".