2216188537 has 2 divisors, whose sum is σ = 2216188538. Its totient is φ = 2216188536.

The previous prime is 2216188463. The next prime is 2216188553. The reversal of 2216188537 is 7358816122.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2006054521 + 210134016 = 44789^2 + 14496^2 .

It is a cyclic number.

It is not a de Polignac number, because 2216188537 - 2¹⁹ = 2215664249 is a prime.

It is a super-2 number, since 2×2216188537² = 9822983263060400738, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2216188493 and 2216188502.

It is not a weakly prime, because it can be changed into another prime (2216188577) 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 as a sum of consecutive naturals, namely, 1108094268 + 1108094269.

It is an arithmetic number, because the mean of its divisors is an integer number (1108094269).

Almost surely, 2^2216188537 is an apocalyptic number.

It is an amenable number.

2216188537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2216188537 is an equidigital number, since it uses as much as digits as its factorization.

2216188537 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 161280, while the sum is 43.

The square root of 2216188537 is about 47076.4116835597. The cubic root of 2216188537 is about 1303.7737559065.

The spelling of 2216188537 in words is "two billion, two hundred sixteen million, one hundred eighty-eight thousand, five hundred thirty-seven".