1208234161 has 4 divisors (see below), whose sum is σ = 1211696500. Its totient is φ = 1204771824.

The previous prime is 1208234143. The next prime is 1208234171. The reversal of 1208234161 is 1614328021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1614328021 = 12043 ⋅134047.

It can be written as a sum of positive squares in 2 ways, for example, as 850305600 + 357928561 = 29160^2 + 18919^2 .

It is a cyclic number.

It is not a de Polignac number, because 1208234161 - 2⁵ = 1208234129 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1208234141) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1730646 + ... + 1731343.

It is an arithmetic number, because the mean of its divisors is an integer number (302924125).

Almost surely, 2^1208234161 is an apocalyptic number.

It is an amenable number.

1208234161 is a deficient number, since it is larger than the sum of its proper divisors (3462339).

1208234161 is an equidigital number, since it uses as much as digits as its factorization.

1208234161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3462338.

The product of its (nonzero) digits is 2304, while the sum is 28.

The square root of 1208234161 is about 34759.6628435893. The cubic root of 1208234161 is about 1065.0836147037.

The spelling of 1208234161 in words is "one billion, two hundred eight million, two hundred thirty-four thousand, one hundred sixty-one".