1671451855 has 4 divisors (see below), whose sum is σ = 2005742232. Its totient is φ = 1337161480.

The previous prime is 1671451841. The next prime is 1671451867. The reversal of 1671451855 is 5581541761.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5581541761 = 2243 ⋅2488427.

It is not a de Polignac number, because 1671451855 - 2¹³ = 1671443663 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 167145181 + ... + 167145190.

It is an arithmetic number, because the mean of its divisors is an integer number (501435558).

Almost surely, 2^1671451855 is an apocalyptic number.

1671451855 is a deficient number, since it is larger than the sum of its proper divisors (334290377).

1671451855 is an equidigital number, since it uses as much as digits as its factorization.

1671451855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 334290376.

The product of its digits is 168000, while the sum is 43.

The square root of 1671451855 is about 40883.3933890033. The cubic root of 1671451855 is about 1186.7647109039.

The spelling of 1671451855 in words is "one billion, six hundred seventy-one million, four hundred fifty-one thousand, eight hundred fifty-five".