2180811533 has 2 divisors, whose sum is σ = 2180811534. Its totient is φ = 2180811532.

The previous prime is 2180811499. The next prime is 2180811541. The reversal of 2180811533 is 3351180812.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1664476804 + 516334729 = 40798^2 + 22723^2 .

It is a cyclic number.

It is not a de Polignac number, because 2180811533 - 2²⁸ = 1912376077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2180811533.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2180811553) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1090405766 + 1090405767.

It is an arithmetic number, because the mean of its divisors is an integer number (1090405767).

Almost surely, 2^2180811533 is an apocalyptic number.

It is an amenable number.

2180811533 is a deficient number, since it is larger than the sum of its proper divisors (1).

2180811533 is an equidigital number, since it uses as much as digits as its factorization.

2180811533 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5760, while the sum is 32.

The square root of 2180811533 is about 46699.1598746701. The cubic root of 2180811533 is about 1296.7991337614.

The spelling of 2180811533 in words is "two billion, one hundred eighty million, eight hundred eleven thousand, five hundred thirty-three".