1642094673 has 4 divisors (see below), whose sum is σ = 2189459568. Its totient is φ = 1094729780.

The previous prime is 1642094569. The next prime is 1642094681. The reversal of 1642094673 is 3764902461.

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 1642094673 - 2²⁴ = 1625317457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1642594673) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 273682443 + ... + 273682448.

It is an arithmetic number, because the mean of its divisors is an integer number (547364892).

Almost surely, 2^1642094673 is an apocalyptic number.

It is an amenable number.

1642094673 is a deficient number, since it is larger than the sum of its proper divisors (547364895).

1642094673 is an equidigital number, since it uses as much as digits as its factorization.

1642094673 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547364894.

The product of its (nonzero) digits is 217728, while the sum is 42.

The square root of 1642094673 is about 40522.7673413354. The cubic root of 1642094673 is about 1179.7755660968.

The spelling of 1642094673 in words is "one billion, six hundred forty-two million, ninety-four thousand, six hundred seventy-three".