1676426809 has 4 divisors (see below), whose sum is σ = 1734234660. Its totient is φ = 1618618960.

The previous prime is 1676426803. The next prime is 1676426813. The reversal of 1676426809 is 9086246761.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 391921209 + 1284505600 = 19797^2 + 35840^2 .

It is a cyclic number.

It is not a de Polignac number, because 1676426809 - 2¹³ = 1676418617 is a prime.

It is a Smith number, since the sum of its digits (49) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1676426803) 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, 28903882 + ... + 28903939.

It is an arithmetic number, because the mean of its divisors is an integer number (433558665).

Almost surely, 2^1676426809 is an apocalyptic number.

It is an amenable number.

1676426809 is a deficient number, since it is larger than the sum of its proper divisors (57807851).

1676426809 is an equidigital number, since it uses as much as digits as its factorization.

1676426809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 57807850.

The product of its (nonzero) digits is 870912, while the sum is 49.

The square root of 1676426809 is about 40944.1913951173. The cubic root of 1676426809 is about 1187.9409840519.

The spelling of 1676426809 in words is "one billion, six hundred seventy-six million, four hundred twenty-six thousand, eight hundred nine".