2149172323 has 2 divisors, whose sum is σ = 2149172324. Its totient is φ = 2149172322.

The previous prime is 2149172257. The next prime is 2149172329. The reversal of 2149172323 is 3232719412.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2149172323 is a prime.

It is not a weakly prime, because it can be changed into another prime (2149172329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074586161 + 1074586162.

It is an arithmetic number, because the mean of its divisors is an integer number (1074586162).

Almost surely, 2^2149172323 is an apocalyptic number.

2149172323 is a deficient number, since it is larger than the sum of its proper divisors (1).

2149172323 is an equidigital number, since it uses as much as digits as its factorization.

2149172323 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18144, while the sum is 34.

The square root of 2149172323 is about 46359.1665477282. The cubic root of 2149172323 is about 1290.4972389546.

The spelling of 2149172323 in words is "two billion, one hundred forty-nine million, one hundred seventy-two thousand, three hundred twenty-three".