537868865 has 8 divisors (see below), whose sum is σ = 683409960. Its totient is φ = 404983552.

The previous prime is 537868789. The next prime is 537868883. The reversal of 537868865 is 568868735.

It is a Cunningham number, because it is equal to 23192²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 12588304 + 525280561 = 3548^2 + 22919^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 537868865 - 2⁸ = 537868609 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 537868865.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3163850 + ... + 3164019.

It is an arithmetic number, because the mean of its divisors is an integer number (85426245).

Almost surely, 2^537868865 is an apocalyptic number.

It is an amenable number.

537868865 is a deficient number, since it is larger than the sum of its proper divisors (145541095).

537868865 is a wasteful number, since it uses less digits than its factorization.

537868865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6327891.

The product of its digits is 9676800, while the sum is 56.

The square root of 537868865 is about 23192.0000215592. Note that the first 4 decimals coincide. The cubic root of 537868865 is about 813.2526151456.

The spelling of 537868865 in words is "five hundred thirty-seven million, eight hundred sixty-eight thousand, eight hundred sixty-five".