3991160045 has 18 divisors (see below), whose sum is σ = 5058133902. Its totient is φ = 3022844976.

The previous prime is 3991160011. The next prime is 3991160059. The reversal of 3991160045 is 5400611993.

3991160045 is digitally balanced in base 3, 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 only one way, i.e., 3192928036 + 798232009 = 56506^2 + 28253^2 .

It is not a de Polignac number, because 3991160045 - 2⁶ = 3991159981 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3991159990 and 3991160008.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2683292 + ... + 2684778.

It is an arithmetic number, because the mean of its divisors is an integer number (281007439).

Almost surely, 2^3991160045 is an apocalyptic number.

It is an amenable number.

3991160045 is a deficient number, since it is larger than the sum of its proper divisors (1066973857).

3991160045 is an frugal number, since it uses more digits than its factorization.

3991160045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3017 (or 1511 counting only the distinct ones).

The product of its (nonzero) digits is 29160, while the sum is 38.

The square root of 3991160045 is about 63175.6285683016. The cubic root of 3991160045 is about 1586.2308099816.

The spelling of 3991160045 in words is "three billion, nine hundred ninety-one million, one hundred sixty thousand, forty-five".