223870154969 has 2 divisors, whose sum is σ = 223870154970. Its totient is φ = 223870154968.

The previous prime is 223870154941. The next prime is 223870154971. The reversal of 223870154969 is 969451078322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 135212114944 + 88658040025 = 367712^2 + 297755^2 .

It is a cyclic number.

It is not a de Polignac number, because 223870154969 - 2²⁸ = 223601719513 is a prime.

It is a super-2 number, since 2×223870154969² (a number of 24 digits) contains 22 as substring.

Together with 223870154971, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (223870150969) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 111935077484 + 111935077485.

It is an arithmetic number, because the mean of its divisors is an integer number (111935077485).

It is a 1-persistent number, because it is pandigital, but 2⋅223870154969 = 447740309938 is not.

Almost surely, 2^223870154969 is an apocalyptic number.

It is an amenable number.

223870154969 is a deficient number, since it is larger than the sum of its proper divisors (1).

223870154969 is an equidigital number, since it uses as much as digits as its factorization.

223870154969 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6531840, while the sum is 56.

The spelling of 223870154969 in words is "two hundred twenty-three billion, eight hundred seventy million, one hundred fifty-four thousand, nine hundred sixty-nine".