1658055161 has 4 divisors (see below), whose sum is σ = 1894920192. Its totient is φ = 1421190132.

The previous prime is 1658055151. The next prime is 1658055167. The reversal of 1658055161 is 1615508561.

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 a de Polignac number, because none of the positive numbers 2^k-1658055161 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1658055167) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 118432505 + ... + 118432518.

It is an arithmetic number, because the mean of its divisors is an integer number (473730048).

Almost surely, 2^1658055161 is an apocalyptic number.

It is an amenable number.

1658055161 is a deficient number, since it is larger than the sum of its proper divisors (236865031).

1658055161 is an equidigital number, since it uses as much as digits as its factorization.

1658055161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 236865030.

The product of its (nonzero) digits is 36000, while the sum is 38.

The square root of 1658055161 is about 40719.2234822817. The cubic root of 1658055161 is about 1183.5855606138.

The spelling of 1658055161 in words is "one billion, six hundred fifty-eight million, fifty-five thousand, one hundred sixty-one".