2991110545 has 4 divisors (see below), whose sum is σ = 3589332660. Its totient is φ = 2392888432.

The previous prime is 2991110537. The next prime is 2991110579. The reversal of 2991110545 is 5450111992.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1583960401 + 1407150144 = 39799^2 + 37512^2 .

It is a cyclic number.

It is not a de Polignac number, because 2991110545 - 2³ = 2991110537 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 299111050 + ... + 299111059.

It is an arithmetic number, because the mean of its divisors is an integer number (897333165).

Almost surely, 2^2991110545 is an apocalyptic number.

It is an amenable number.

2991110545 is a deficient number, since it is larger than the sum of its proper divisors (598222115).

2991110545 is an equidigital number, since it uses as much as digits as its factorization.

2991110545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 598222114.

The product of its (nonzero) digits is 16200, while the sum is 37.

The square root of 2991110545 is about 54691.0462964460. The cubic root of 2991110545 is about 1440.8236262097.

The spelling of 2991110545 in words is "two billion, nine hundred ninety-one million, one hundred ten thousand, five hundred forty-five".