2148657923 has 2 divisors, whose sum is σ = 2148657924. Its totient is φ = 2148657922.

The previous prime is 2148657919. The next prime is 2148657947. The reversal of 2148657923 is 3297568412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2148657923 - 2² = 2148657919 is a prime.

It is not a weakly prime, because it can be changed into another prime (2148657323) 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, 1074328961 + 1074328962.

It is an arithmetic number, because the mean of its divisors is an integer number (1074328962).

Almost surely, 2^2148657923 is an apocalyptic number.

2148657923 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148657923 is an equidigital number, since it uses as much as digits as its factorization.

2148657923 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 725760, while the sum is 47.

The square root of 2148657923 is about 46353.6182298642. The cubic root of 2148657923 is about 1290.3942714475.

The spelling of 2148657923 in words is "two billion, one hundred forty-eight million, six hundred fifty-seven thousand, nine hundred twenty-three".