2148047609 has 2 divisors, whose sum is σ = 2148047610. Its totient is φ = 2148047608.

The previous prime is 2148047569. The next prime is 2148047621. The reversal of 2148047609 is 9067408412.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2089861225 + 58186384 = 45715^2 + 7628^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148047609 - 2¹⁶ = 2147982073 is a prime.

It is a super-2 number, since 2×2148047609² = 9228217061061233762, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2148047659) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074023804 + 1074023805.

It is an arithmetic number, because the mean of its divisors is an integer number (1074023805).

Almost surely, 2^2148047609 is an apocalyptic number.

It is an amenable number.

2148047609 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148047609 is an equidigital number, since it uses as much as digits as its factorization.

2148047609 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 96768, while the sum is 41.

The square root of 2148047609 is about 46347.0345221784. The cubic root of 2148047609 is about 1290.2720835058.

The spelling of 2148047609 in words is "two billion, one hundred forty-eight million, forty-seven thousand, six hundred nine".