160642861 has 4 divisors (see below), whose sum is σ = 166182300. Its totient is φ = 155103424.

The previous prime is 160642849. The next prime is 160642897. The reversal of 160642861 is 168246061.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 51753636 + 108889225 = 7194^2 + 10435^2 .

It is a cyclic number.

It is not a de Polignac number, because 160642861 - 2¹⁷ = 160511789 is a prime.

It is a super-2 number, since 2×160642861² = 51612257580530642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (160642661) 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, 2769676 + ... + 2769733.

It is an arithmetic number, because the mean of its divisors is an integer number (41545575).

Almost surely, 2^160642861 is an apocalyptic number.

It is an amenable number.

160642861 is a deficient number, since it is larger than the sum of its proper divisors (5539439).

160642861 is an equidigital number, since it uses as much as digits as its factorization.

160642861 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5539438.

The product of its (nonzero) digits is 13824, while the sum is 34.

The square root of 160642861 is about 12674.4964791506. The cubic root of 160642861 is about 543.6096322222.

The spelling of 160642861 in words is "one hundred sixty million, six hundred forty-two thousand, eight hundred sixty-one".