2172477941 has 2 divisors, whose sum is σ = 2172477942. Its totient is φ = 2172477940.

The previous prime is 2172477893. The next prime is 2172478001. The reversal of 2172477941 is 1497742712.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2058436900 + 114041041 = 45370^2 + 10679^2 .

It is a cyclic number.

It is not a de Polignac number, because 2172477941 - 2⁶ = 2172477877 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2172477892 and 2172477901.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2172477641) 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, 1086238970 + 1086238971.

It is an arithmetic number, because the mean of its divisors is an integer number (1086238971).

Almost surely, 2^2172477941 is an apocalyptic number.

It is an amenable number.

2172477941 is a deficient number, since it is larger than the sum of its proper divisors (1).

2172477941 is an equidigital number, since it uses as much as digits as its factorization.

2172477941 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 197568, while the sum is 44.

The square root of 2172477941 is about 46609.8481117457. The cubic root of 2172477941 is about 1295.1451944357.

The spelling of 2172477941 in words is "two billion, one hundred seventy-two million, four hundred seventy-seven thousand, nine hundred forty-one".