2148646169 has 2 divisors, whose sum is σ = 2148646170. Its totient is φ = 2148646168.

The previous prime is 2148646153. The next prime is 2148646207. The reversal of 2148646169 is 9616468412.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2089586944 + 59059225 = 45712^2 + 7685^2 .

It is a cyclic number.

It is not a de Polignac number, because 2148646169 - 2⁴ = 2148646153 is a prime.

It is a super-2 number, since 2×2148646169² = 9233360719116753122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (2148646109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1074323084 + 1074323085.

It is an arithmetic number, because the mean of its divisors is an integer number (1074323085).

Almost surely, 2^2148646169 is an apocalyptic number.

It is an amenable number.

2148646169 is a deficient number, since it is larger than the sum of its proper divisors (1).

2148646169 is an equidigital number, since it uses as much as digits as its factorization.

2148646169 is an evil number, because the sum of its binary digits is even.

The product of its digits is 497664, while the sum is 47.

The square root of 2148646169 is about 46353.4914434717. The cubic root of 2148646169 is about 1290.3919184559.

The spelling of 2148646169 in words is "two billion, one hundred forty-eight million, six hundred forty-six thousand, one hundred sixty-nine".