2658534161 has 4 divisors (see below), whose sum is σ = 2665164324. Its totient is φ = 2651904000.

The previous prime is 2658534121. The next prime is 2658534167. The reversal of 2658534161 is 1614358562.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1614358562 = 2 ⋅807179281.

It can be written as a sum of positive squares in 2 ways, for example, as 2357685136 + 300849025 = 48556^2 + 17345^2 .

It is a cyclic number.

It is not a de Polignac number, because 2658534161 - 2¹⁸ = 2658272017 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2658534167) 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, 3314480 + ... + 3315281.

It is an arithmetic number, because the mean of its divisors is an integer number (666291081).

Almost surely, 2^2658534161 is an apocalyptic number.

It is an amenable number.

2658534161 is a deficient number, since it is larger than the sum of its proper divisors (6630163).

2658534161 is an equidigital number, since it uses as much as digits as its factorization.

2658534161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6630162.

The product of its digits is 172800, while the sum is 41.

The square root of 2658534161 is about 51560.9751750294. The cubic root of 2658534161 is about 1385.3114221051.

The spelling of 2658534161 in words is "two billion, six hundred fifty-eight million, five hundred thirty-four thousand, one hundred sixty-one".