2238561623 has 2 divisors, whose sum is σ = 2238561624. Its totient is φ = 2238561622.

The previous prime is 2238561599. The next prime is 2238561631. The reversal of 2238561623 is 3261658322.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 2238561623 - 2²² = 2234367319 is a prime.

It is a super-2 number, since 2×2238561623² = 10022316279936788258, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2238561673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1119280811 + 1119280812.

It is an arithmetic number, because the mean of its divisors is an integer number (1119280812).

Almost surely, 2^2238561623 is an apocalyptic number.

2238561623 is a deficient number, since it is larger than the sum of its proper divisors (1).

2238561623 is an equidigital number, since it uses as much as digits as its factorization.

2238561623 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 103680, while the sum is 38.

The square root of 2238561623 is about 47313.4401940928. The cubic root of 2238561623 is about 1308.1464030047.

The spelling of 2238561623 in words is "two billion, two hundred thirty-eight million, five hundred sixty-one thousand, six hundred twenty-three".