2148669547 has 2 divisors, whose sum is σ = 2148669548. Its totient is φ = 2148669546.

The previous prime is 2148669533. The next prime is 2148669569. The reversal of 2148669547 is 7459668412.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2148669547 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 2148669494 and 2148669503.

It is not a weakly prime, because it can be changed into another prime (2148669577) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074334773 + 1074334774.

It is an arithmetic number, because the mean of its divisors is an integer number (1074334774).

Almost surely, 2^2148669547 is an apocalyptic number.

2148669547 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148669547 is an equidigital number, since it uses as much as digits as its factorization.

2148669547 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2903040, while the sum is 52.

The square root of 2148669547 is about 46353.7436136500. The cubic root of 2148669547 is about 1290.3965984064.

The spelling of 2148669547 in words is "two billion, one hundred forty-eight million, six hundred sixty-nine thousand, five hundred forty-seven".