2148547939 has 2 divisors, whose sum is σ = 2148547940. Its totient is φ = 2148547938.

The previous prime is 2148547937. The next prime is 2148547943. The reversal of 2148547939 is 9397458412.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2148547939 - 2¹ = 2148547937 is a prime.

It is a super-2 number, since 2×2148547939² = 9232516492362295442, which contains 22 as substring.

Together with 2148547937, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (2148547937) 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, 1074273969 + 1074273970.

It is an arithmetic number, because the mean of its divisors is an integer number (1074273970).

Almost surely, 2^2148547939 is an apocalyptic number.

2148547939 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148547939 is an equidigital number, since it uses as much as digits as its factorization.

2148547939 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2177280, while the sum is 52.

The square root of 2148547939 is about 46352.4318563762. The cubic root of 2148547939 is about 1290.3722538051.

The spelling of 2148547939 in words is "two billion, one hundred forty-eight million, five hundred forty-seven thousand, nine hundred thirty-nine".