2218426697 has 2 divisors, whose sum is σ = 2218426698. Its totient is φ = 2218426696.

The previous prime is 2218426667. The next prime is 2218426733. The reversal of 2218426697 is 7966248122.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2030764096 + 187662601 = 45064^2 + 13699^2 .

It is a cyclic number.

It is not a de Polignac number, because 2218426697 - 2⁶ = 2218426633 is a prime.

It is not a weakly prime, because it can be changed into another prime (2218426667) 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, 1109213348 + 1109213349.

It is an arithmetic number, because the mean of its divisors is an integer number (1109213349).

Almost surely, 2^2218426697 is an apocalyptic number.

It is an amenable number.

2218426697 is a deficient number, since it is larger than the sum of its proper divisors (1).

2218426697 is an equidigital number, since it uses as much as digits as its factorization.

2218426697 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 580608, while the sum is 47.

The square root of 2218426697 is about 47100.1772501973. The cubic root of 2218426697 is about 1304.2125080619.

The spelling of 2218426697 in words is "two billion, two hundred eighteen million, four hundred twenty-six thousand, six hundred ninety-seven".