1667171045 has 8 divisors (see below), whose sum is σ = 2118288024. Its totient is φ = 1255281664.

The previous prime is 1667170997. The next prime is 1667171047. The reversal of 1667171045 is 5401717661.

It can be written as a sum of positive squares in 4 ways, for example, as 38725729 + 1628445316 = 6223^2 + 40354^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1667171045 - 2¹⁴ = 1667154661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1667171047) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9806804 + ... + 9806973.

It is an arithmetic number, because the mean of its divisors is an integer number (264786003).

Almost surely, 2^1667171045 is an apocalyptic number.

It is an amenable number.

1667171045 is a deficient number, since it is larger than the sum of its proper divisors (451116979).

1667171045 is a wasteful number, since it uses less digits than its factorization.

1667171045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19613799.

The product of its (nonzero) digits is 35280, while the sum is 38.

The square root of 1667171045 is about 40831.0059268689. The cubic root of 1667171045 is about 1185.7506907616.

The spelling of 1667171045 in words is "one billion, six hundred sixty-seven million, one hundred seventy-one thousand, forty-five".