1673671731 has 8 divisors (see below), whose sum is σ = 2231753664. Its totient is φ = 1115685480.

The previous prime is 1673671673. The next prime is 1673671771. The reversal of 1673671731 is 1371763761.

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

It is not a de Polignac number, because 1673671731 - 2⁶ = 1673671667 is a prime.

It is a super-2 number, since 2×1673671731² = 5602354126297072722, which contains 22 as substring.

It is a Smith number, since the sum of its digits (42) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is not an unprimeable number, because it can be changed into a prime (1673671771) 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, 46596 + ... + 74286.

It is an arithmetic number, because the mean of its divisors is an integer number (278969208).

Almost surely, 2^1673671731 is an apocalyptic number.

1673671731 is a deficient number, since it is larger than the sum of its proper divisors (558081933).

1673671731 is a wasteful number, since it uses less digits than its factorization.

1673671731 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47841.

The product of its digits is 111132, while the sum is 42.

The square root of 1673671731 is about 40910.5332524522. The cubic root of 1673671731 is about 1187.2898641432.

The spelling of 1673671731 in words is "one billion, six hundred seventy-three million, six hundred seventy-one thousand, seven hundred thirty-one".