1679794749 has 12 divisors (see below), whose sum is σ = 2448631900. Its totient is φ = 1109588544.

The previous prime is 1679794691. The next prime is 1679794763. The reversal of 1679794749 is 9474979761.

1679794749 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 898200900 + 781593849 = 29970^2 + 27957^2 .

It is not a de Polignac number, because 1679794749 - 2²⁸ = 1411359293 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1672794749) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 855184 + ... + 857145.

Almost surely, 2^1679794749 is an apocalyptic number.

It is an amenable number.

1679794749 is a deficient number, since it is larger than the sum of its proper divisors (768837151).

1679794749 is a wasteful number, since it uses less digits than its factorization.

1679794749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1712444 (or 1712441 counting only the distinct ones).

The product of its digits is 24004512, while the sum is 63.

The square root of 1679794749 is about 40985.2991815358. The cubic root of 1679794749 is about 1188.7359760442.

The spelling of 1679794749 in words is "one billion, six hundred seventy-nine million, seven hundred ninety-four thousand, seven hundred forty-nine".