1840566673 has 4 divisors (see below), whose sum is σ = 2007890928. Its totient is φ = 1673242420.

The previous prime is 1840566649. The next prime is 1840566709. The reversal of 1840566673 is 3766650481.

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.

It is a cyclic number.

It is not a de Polignac number, because 1840566673 - 2²⁹ = 1303695761 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1840569673) 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, 83662111 + ... + 83662132.

It is an arithmetic number, because the mean of its divisors is an integer number (501972732).

Almost surely, 2^1840566673 is an apocalyptic number.

It is an amenable number.

1840566673 is a deficient number, since it is larger than the sum of its proper divisors (167324255).

1840566673 is a wasteful number, since it uses less digits than its factorization.

1840566673 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 167324254.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 1840566673 is about 42901.8259867806. The cubic root of 1840566673 is about 1225.5109179076.

It can be divided in two parts, 18405 and 66673, that added together give a triangular number (85078 = T₄₁₂).

The spelling of 1840566673 in words is "one billion, eight hundred forty million, five hundred sixty-six thousand, six hundred seventy-three".