216350537 has 16 divisors (see below), whose sum is σ = 236044032. Its totient is φ = 197112960.

The previous prime is 216350509. The next prime is 216350543. The reversal of 216350537 is 735053612.

It is a cyclic number.

It is not a de Polignac number, because 216350537 - 2¹⁸ = 216088393 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (216350557) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 589328 + ... + 589694.

It is an arithmetic number, because the mean of its divisors is an integer number (14752752).

Almost surely, 2^216350537 is an apocalyptic number.

It is an amenable number.

216350537 is a deficient number, since it is larger than the sum of its proper divisors (19693495).

216350537 is a wasteful number, since it uses less digits than its factorization.

216350537 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 848.

The product of its (nonzero) digits is 18900, while the sum is 32.

The square root of 216350537 is about 14708.8591331891. The cubic root of 216350537 is about 600.3243958769.

The spelling of 216350537 in words is "two hundred sixteen million, three hundred fifty thousand, five hundred thirty-seven".