2172435613 has 2 divisors, whose sum is σ = 2172435614. Its totient is φ = 2172435612.

The previous prime is 2172435611. The next prime is 2172435631. The reversal of 2172435613 is 3165342712.

Together with next prime (2172435631) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1719512089 + 452923524 = 41467^2 + 21282^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172435613 - 2¹ = 2172435611 is a prime.

Together with 2172435611, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172435611) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086217806 + 1086217807.

It is an arithmetic number, because the mean of its divisors is an integer number (1086217807).

Almost surely, 2^2172435613 is an apocalyptic number.

It is an amenable number.

2172435613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172435613 is an equidigital number, since it uses as much as digits as its factorization.

2172435613 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 30240, while the sum is 34.

The square root of 2172435613 is about 46609.3940424031. The cubic root of 2172435613 is about 1295.1367829561.

The spelling of 2172435613 in words is "two billion, one hundred seventy-two million, four hundred thirty-five thousand, six hundred thirteen".