537821658 has 48 divisors (see below), whose sum is σ = 1298284416. Its totient is φ = 159505920.

The previous prime is 537821569. The next prime is 537821659. The reversal of 537821658 is 856128735.

It is not an unprimeable number, because it can be changed into a prime (537821659) by changing a digit.

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 23 ways as a sum of consecutive naturals, for example, 19591 + ... + 38202.

It is an arithmetic number, because the mean of its divisors is an integer number (27047592).

Almost surely, 2^537821658 is an apocalyptic number.

537821658 is an abundant number, since it is smaller than the sum of its proper divisors (760462758).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

537821658 is a wasteful number, since it uses less digits than its factorization.

537821658 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 57859 (or 57856 counting only the distinct ones).

The product of its digits is 403200, while the sum is 45.

The square root of 537821658 is about 23190.9822560408. The cubic root of 537821658 is about 813.2288222710.

The spelling of 537821658 in words is "five hundred thirty-seven million, eight hundred twenty-one thousand, six hundred fifty-eight".