537698009 has 4 divisors (see below), whose sum is σ = 541566480. Its totient is φ = 533829540.

The previous prime is 537698003. The next prime is 537698041. The reversal of 537698009 is 900896735.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-537698009 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (537698003) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1934027 + ... + 1934304.

It is an arithmetic number, because the mean of its divisors is an integer number (135391620).

Almost surely, 2^537698009 is an apocalyptic number.

It is an amenable number.

537698009 is a deficient number, since it is larger than the sum of its proper divisors (3868471).

537698009 is a wasteful number, since it uses less digits than its factorization.

537698009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3868470.

The product of its (nonzero) digits is 408240, while the sum is 47.

The square root of 537698009 is about 23188.3162174402. The cubic root of 537698009 is about 813.1664951431.

The spelling of 537698009 in words is "five hundred thirty-seven million, six hundred ninety-eight thousand, nine".