3109491993 has 8 divisors (see below), whose sum is σ = 4146528256. Its totient is φ = 2072725200.

The previous prime is 3109491977. The next prime is 3109492037. The reversal of 3109491993 is 3991949013.

3109491993 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 3109491993 - 2⁴ = 3109491977 is a prime.

It is a super-2 number, since 2×3109491993² = 19337880909062224098, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3109491943) 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, 38698 + ... + 87843.

It is an arithmetic number, because the mean of its divisors is an integer number (518316032).

Almost surely, 2^3109491993 is an apocalyptic number.

It is an amenable number.

3109491993 is a deficient number, since it is larger than the sum of its proper divisors (1037036263).

3109491993 is a wasteful number, since it uses less digits than its factorization.

3109491993 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134735.

The product of its (nonzero) digits is 236196, while the sum is 48.

The square root of 3109491993 is about 55762.8190912188. The cubic root of 3109491993 is about 1459.5864208234.

The spelling of 3109491993 in words is "three billion, one hundred nine million, four hundred ninety-one thousand, nine hundred ninety-three".