1789993117 has 8 divisors (see below), whose sum is σ = 1954075680. Its totient is φ = 1626136560.

The previous prime is 1789993081. The next prime is 1789993151. The reversal of 1789993117 is 7113999871.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1789993117 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 (1789991117) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 39718 + ... + 71815.

It is an arithmetic number, because the mean of its divisors is an integer number (244259460).

Almost surely, 2^1789993117 is an apocalyptic number.

It is an amenable number.

1789993117 is a deficient number, since it is larger than the sum of its proper divisors (164082563).

1789993117 is a wasteful number, since it uses less digits than its factorization.

1789993117 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 113003.

The product of its digits is 857304, while the sum is 55.

The square root of 1789993117 is about 42308.3102593332. The cubic root of 1789993117 is about 1214.1819908971.

The spelling of 1789993117 in words is "one billion, seven hundred eighty-nine million, nine hundred ninety-three thousand, one hundred seventeen".