1789794989 has 8 divisors (see below), whose sum is σ = 1803869760. Its totient is φ = 1775735136.

The previous prime is 1789794983. The next prime is 1789794991. The reversal of 1789794989 is 9894979871.

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 1789794989 - 2⁴ = 1789794973 is a prime.

It is a super-2 number, since 2×1789794989² = 6406732205299020242, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1789794983) by changing a digit.

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, 419702 + ... + 423944.

It is an arithmetic number, because the mean of its divisors is an integer number (225483720).

Almost surely, 2^1789794989 is an apocalyptic number.

It is an amenable number.

1789794989 is a deficient number, since it is larger than the sum of its proper divisors (14074771).

1789794989 is a wasteful number, since it uses less digits than its factorization.

1789794989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7459.

The product of its digits is 82301184, while the sum is 71.

The square root of 1789794989 is about 42305.9687160098. The cubic root of 1789794989 is about 1214.1371914090.

The spelling of 1789794989 in words is "one billion, seven hundred eighty-nine million, seven hundred ninety-four thousand, nine hundred eighty-nine".