2991866101 has 8 divisors (see below), whose sum is σ = 3419651520. Its totient is φ = 2564174688.

The previous prime is 2991866081. The next prime is 2991866147. The reversal of 2991866101 is 1016681992.

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

It is a cyclic number.

It is not a de Polignac number, because 2991866101 - 2¹⁹ = 2991341813 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2991866191) 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, 68970 + ... + 103636.

It is an arithmetic number, because the mean of its divisors is an integer number (427456440).

Almost surely, 2^2991866101 is an apocalyptic number.

It is an amenable number.

2991866101 is a deficient number, since it is larger than the sum of its proper divisors (427785419).

2991866101 is a wasteful number, since it uses less digits than its factorization.

2991866101 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47003.

The product of its (nonzero) digits is 46656, while the sum is 43.

The square root of 2991866101 is about 54697.9533529363. The cubic root of 2991866101 is about 1440.9449335826.

The spelling of 2991866101 in words is "two billion, nine hundred ninety-one million, eight hundred sixty-six thousand, one hundred one".