2991134786 has 8 divisors (see below), whose sum is σ = 4486934844. Its totient is φ = 1495489840.

The previous prime is 2991134771. The next prime is 2991134807. The reversal of 2991134786 is 6874311992.

It can be written as a sum of positive squares in 2 ways, for example, as 2977775761 + 13359025 = 54569^2 + 3655^2 .

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

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 51056 + ... + 92676.

Almost surely, 2^2991134786 is an apocalyptic number.

2991134786 is a deficient number, since it is larger than the sum of its proper divisors (1495800058).

2991134786 is a wasteful number, since it uses less digits than its factorization.

2991134786 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 77556.

The product of its digits is 653184, while the sum is 50.

The square root of 2991134786 is about 54691.2679136258. The cubic root of 2991134786 is about 1440.8275185111.

The spelling of 2991134786 in words is "two billion, nine hundred ninety-one million, one hundred thirty-four thousand, seven hundred eighty-six".