1671672723 has 32 divisors (see below), whose sum is σ = 2659430400. Its totient is φ = 913804416.

The previous prime is 1671672707. The next prime is 1671672727. The reversal of 1671672723 is 3272761761.

It is not a de Polignac number, because 1671672723 - 2⁴ = 1671672707 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1671672727) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 53790 + ... + 78972.

It is an arithmetic number, because the mean of its divisors is an integer number (83107200).

Almost surely, 2^1671672723 is an apocalyptic number.

1671672723 is a deficient number, since it is larger than the sum of its proper divisors (987757677).

1671672723 is a wasteful number, since it uses less digits than its factorization.

1671672723 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25331.

The product of its digits is 148176, while the sum is 42.

The square root of 1671672723 is about 40886.0944943388. The cubic root of 1671672723 is about 1186.8169821878.

The spelling of 1671672723 in words is "one billion, six hundred seventy-one million, six hundred seventy-two thousand, seven hundred twenty-three".