223018694819 has 2 divisors, whose sum is σ = 223018694820. Its totient is φ = 223018694818.

The previous prime is 223018694813. The next prime is 223018694851. The reversal of 223018694819 is 918496810322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 223018694819 - 2⁴ = 223018694803 is a prime.

It is a super-2 number, since 2×223018694819² (a number of 23 digits) contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (223018694813) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111509347409 + 111509347410.

It is an arithmetic number, because the mean of its divisors is an integer number (111509347410).

Almost surely, 2^223018694819 is an apocalyptic number.

223018694819 is a deficient number, since it is larger than the sum of its proper divisors (1).

223018694819 is an equidigital number, since it uses as much as digits as its factorization.

223018694819 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1492992, while the sum is 53.

The spelling of 223018694819 in words is "two hundred twenty-three billion, eighteen million, six hundred ninety-four thousand, eight hundred nineteen".