2730858161 has 4 divisors (see below), whose sum is σ = 2769321024. Its totient is φ = 2692395300.

The previous prime is 2730858139. The next prime is 2730858181. The reversal of 2730858161 is 1618580372.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2730858161 - 2³⁰ = 1657116337 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2730858131) 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, 19231325 + ... + 19231466.

It is an arithmetic number, because the mean of its divisors is an integer number (692330256).

Almost surely, 2^2730858161 is an apocalyptic number.

It is an amenable number.

2730858161 is a deficient number, since it is larger than the sum of its proper divisors (38462863).

2730858161 is an equidigital number, since it uses as much as digits as its factorization.

2730858161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 38462862.

The product of its (nonzero) digits is 80640, while the sum is 41.

The square root of 2730858161 is about 52257.6134261793. The cubic root of 2730858161 is about 1397.7614158043.

The spelling of 2730858161 in words is "two billion, seven hundred thirty million, eight hundred fifty-eight thousand, one hundred sixty-one".