2149863081 has 8 divisors (see below), whose sum is σ = 2891851680. Its totient is φ = 1420558272.

The previous prime is 2149863041. The next prime is 2149863083. The reversal of 2149863081 is 1803689412.

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

It is not a de Polignac number, because 2149863081 - 2⁶ = 2149863017 is a prime.

It is a super-2 number, since 2×2149863081² = 9243822534093625122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2149863083) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 3170551 + ... + 3171228.

It is an arithmetic number, because the mean of its divisors is an integer number (361481460).

Almost surely, 2^2149863081 is an apocalyptic number.

It is an amenable number.

2149863081 is a deficient number, since it is larger than the sum of its proper divisors (741988599).

2149863081 is a wasteful number, since it uses less digits than its factorization.

2149863081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6341895.

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 2149863081 is about 46366.6160184243. The cubic root of 2149863081 is about 1290.6354822210.

The spelling of 2149863081 in words is "two billion, one hundred forty-nine million, eight hundred sixty-three thousand, eighty-one".