2192174981 has 2 divisors, whose sum is σ = 2192174982. Its totient is φ = 2192174980.

The previous prime is 2192174947. The next prime is 2192174993. The reversal of 2192174981 is 1894712912.

It is a happy number.

2192174981 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1229624356 + 962550625 = 35066^2 + 31025^2 .

It is a cyclic number.

It is not a de Polignac number, because 2192174981 - 2⁶ = 2192174917 is a prime.

It is a super-2 number, since 2×2192174981² = 9611262294644700722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2192174581) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1096087490 + 1096087491.

It is an arithmetic number, because the mean of its divisors is an integer number (1096087491).

Almost surely, 2^2192174981 is an apocalyptic number.

It is an amenable number.

2192174981 is a deficient number, since it is larger than the sum of its proper divisors (1).

2192174981 is an equidigital number, since it uses as much as digits as its factorization.

2192174981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 72576, while the sum is 44.

The square root of 2192174981 is about 46820.6683100530. The cubic root of 2192174981 is about 1299.0476221839.

The spelling of 2192174981 in words is "two billion, one hundred ninety-two million, one hundred seventy-four thousand, nine hundred eighty-one".