1679581045 has 8 divisors (see below), whose sum is σ = 2134056024. Its totient is φ = 1264625664.

The previous prime is 1679581039. The next prime is 1679581051. The reversal of 1679581045 is 5401859761.

It is an interprime number because it is at equal distance from previous prime (1679581039) and next prime (1679581051).

It can be written as a sum of positive squares in 4 ways, for example, as 560410929 + 1119170116 = 23673^2 + 33454^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 1679581045 - 2¹¹ = 1679578997 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1679580986 and 1679581004.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9879804 + ... + 9879973.

It is an arithmetic number, because the mean of its divisors is an integer number (266757003).

Almost surely, 2^1679581045 is an apocalyptic number.

It is an amenable number.

1679581045 is a deficient number, since it is larger than the sum of its proper divisors (454474979).

1679581045 is a wasteful number, since it uses less digits than its factorization.

1679581045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19759799.

The product of its (nonzero) digits is 302400, while the sum is 46.

The square root of 1679581045 is about 40982.6920174846. The cubic root of 1679581045 is about 1188.6855634553.

The spelling of 1679581045 in words is "one billion, six hundred seventy-nine million, five hundred eighty-one thousand, forty-five".