2991183647 has 2 divisors, whose sum is σ = 2991183648. Its totient is φ = 2991183646.

The previous prime is 2991183641. The next prime is 2991183683. The reversal of 2991183647 is 7463811992.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2991183647 is a prime.

It is a super-2 number, since 2×2991183647² = 17894359220160441218, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2991183595 and 2991183604.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2991183641) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1495591823 + 1495591824.

It is an arithmetic number, because the mean of its divisors is an integer number (1495591824).

Almost surely, 2^2991183647 is an apocalyptic number.

2991183647 is a deficient number, since it is larger than the sum of its proper divisors (1).

2991183647 is an equidigital number, since it uses as much as digits as its factorization.

2991183647 is an evil number, because the sum of its binary digits is even.

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

The square root of 2991183647 is about 54691.7146101674. The cubic root of 2991183647 is about 1440.8353639048.

The spelling of 2991183647 in words is "two billion, nine hundred ninety-one million, one hundred eighty-three thousand, six hundred forty-seven".