1670571673 has 4 divisors (see below), whose sum is σ = 1743205248. Its totient is φ = 1597938100.

The previous prime is 1670571659. The next prime is 1670571689. The reversal of 1670571673 is 3761750761.

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, and also an emirpimes, since its reverse is a distinct semiprime: 3761750761 = 1051 ⋅3579211.

It is a cyclic number.

It is not a de Polignac number, because 1670571673 - 2¹³ = 1670563481 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1670571653) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 36316753 + ... + 36316798.

It is an arithmetic number, because the mean of its divisors is an integer number (435801312).

Almost surely, 2^1670571673 is an apocalyptic number.

It is an amenable number.

1670571673 is a deficient number, since it is larger than the sum of its proper divisors (72633575).

1670571673 is an equidigital number, since it uses as much as digits as its factorization.

1670571673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72633574.

The product of its (nonzero) digits is 185220, while the sum is 43.

The square root of 1670571673 is about 40872.6274296136. The cubic root of 1670571673 is about 1186.5563586376.

The spelling of 1670571673 in words is "one billion, six hundred seventy million, five hundred seventy-one thousand, six hundred seventy-three".