1671500161 has 4 divisors (see below), whose sum is σ = 1681509312. Its totient is φ = 1661491012.

The previous prime is 1671500153. The next prime is 1671500209. The reversal of 1671500161 is 1610051761.

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 1671500161 - 2³ = 1671500153 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1671500261) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5004325 + ... + 5004658.

It is an arithmetic number, because the mean of its divisors is an integer number (420377328).

Almost surely, 2^1671500161 is an apocalyptic number.

It is an amenable number.

1671500161 is a deficient number, since it is larger than the sum of its proper divisors (10009151).

1671500161 is a wasteful number, since it uses less digits than its factorization.

1671500161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10009150.

The product of its (nonzero) digits is 1260, while the sum is 28.

The square root of 1671500161 is about 40883.9841625055. The cubic root of 1671500161 is about 1186.7761435403.

The spelling of 1671500161 in words is "one billion, six hundred seventy-one million, five hundred thousand, one hundred sixty-one".