2173880537 has 2 divisors, whose sum is σ = 2173880538. Its totient is φ = 2173880536.

The previous prime is 2173880507. The next prime is 2173880543. The reversal of 2173880537 is 7350883712.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2073800521 + 100080016 = 45539^2 + 10004^2 .

It is a cyclic number.

It is not a de Polignac number, because 2173880537 - 2²⁴ = 2157103321 is a prime.

It is not a weakly prime, because it can be changed into another prime (2173880507) 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, 1086940268 + 1086940269.

It is an arithmetic number, because the mean of its divisors is an integer number (1086940269).

Almost surely, 2^2173880537 is an apocalyptic number.

It is an amenable number.

2173880537 is a deficient number, since it is larger than the sum of its proper divisors (1).

2173880537 is an equidigital number, since it uses as much as digits as its factorization.

2173880537 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 282240, while the sum is 44.

The square root of 2173880537 is about 46624.8918175689. The cubic root of 2173880537 is about 1295.4238585114.

The spelling of 2173880537 in words is "two billion, one hundred seventy-three million, eight hundred eighty thousand, five hundred thirty-seven".