2219837881 has 2 divisors, whose sum is σ = 2219837882. Its totient is φ = 2219837880.

The previous prime is 2219837869. The next prime is 2219837957. The reversal of 2219837881 is 1887389122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2121431481 + 98406400 = 46059^2 + 9920^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219837881 - 2¹⁷ = 2219706809 is a prime.

It is a super-2 number, since 2×2219837881² = 9855360435845140322, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2219837381) 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 as a sum of consecutive naturals, namely, 1109918940 + 1109918941.

It is an arithmetic number, because the mean of its divisors is an integer number (1109918941).

Almost surely, 2^2219837881 is an apocalyptic number.

It is an amenable number.

2219837881 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219837881 is an equidigital number, since it uses as much as digits as its factorization.

2219837881 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 387072, while the sum is 49.

The square root of 2219837881 is about 47115.1555340742. The cubic root of 2219837881 is about 1304.4889943526.

The spelling of 2219837881 in words is "two billion, two hundred nineteen million, eight hundred thirty-seven thousand, eight hundred eighty-one".