2172898613 has 2 divisors, whose sum is σ = 2172898614. Its totient is φ = 2172898612.

The previous prime is 2172898579. The next prime is 2172898627. The reversal of 2172898613 is 3168982712.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1928351569 + 244547044 = 43913^2 + 15638^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172898613 - 2⁶ = 2172898549 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172898633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1086449306 + 1086449307.

It is an arithmetic number, because the mean of its divisors is an integer number (1086449307).

Almost surely, 2^2172898613 is an apocalyptic number.

It is an amenable number.

2172898613 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172898613 is an equidigital number, since it uses as much as digits as its factorization.

2172898613 is an evil number, because the sum of its binary digits is even.

The product of its digits is 290304, while the sum is 47.

The square root of 2172898613 is about 46614.3605876987. The cubic root of 2172898613 is about 1295.2287850285.

The spelling of 2172898613 in words is "two billion, one hundred seventy-two million, eight hundred ninety-eight thousand, six hundred thirteen".