2235681361 has 2 divisors, whose sum is σ = 2235681362. Its totient is φ = 2235681360.

The previous prime is 2235681353. The next prime is 2235681391. The reversal of 2235681361 is 1631865322.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1861491025 + 374190336 = 43145^2 + 19344^2 .

It is a cyclic number.

It is not a de Polignac number, because 2235681361 - 2³ = 2235681353 is a prime.

It is a super-2 number, since 2×2235681361² = 9996542295845624642, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 2235681361.

It is not a weakly prime, because it can be changed into another prime (2235681391) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1117840680 + 1117840681.

It is an arithmetic number, because the mean of its divisors is an integer number (1117840681).

Almost surely, 2^2235681361 is an apocalyptic number.

It is an amenable number.

2235681361 is a deficient number, since it is larger than the sum of its proper divisors (1).

2235681361 is an equidigital number, since it uses as much as digits as its factorization.

2235681361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 51840, while the sum is 37.

The square root of 2235681361 is about 47282.9923016723. The cubic root of 2235681361 is about 1307.5851167677.

The spelling of 2235681361 in words is "two billion, two hundred thirty-five million, six hundred eighty-one thousand, three hundred sixty-one".