2219868557 has 2 divisors, whose sum is σ = 2219868558. Its totient is φ = 2219868556.

The previous prime is 2219868533. The next prime is 2219868611. The reversal of 2219868557 is 7558689122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2125117801 + 94750756 = 46099^2 + 9734^2 .

It is a cyclic number.

It is not a de Polignac number, because 2219868557 - 2¹⁶ = 2219803021 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2219868499 and 2219868508.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2219868757) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1109934278 + 1109934279.

It is an arithmetic number, because the mean of its divisors is an integer number (1109934279).

Almost surely, 2^2219868557 is an apocalyptic number.

It is an amenable number.

2219868557 is a deficient number, since it is larger than the sum of its proper divisors (1).

2219868557 is an equidigital number, since it uses as much as digits as its factorization.

2219868557 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2419200, while the sum is 53.

The square root of 2219868557 is about 47115.4810757568. The cubic root of 2219868557 is about 1304.4950032479.

The spelling of 2219868557 in words is "two billion, two hundred nineteen million, eight hundred sixty-eight thousand, five hundred fifty-seven".