2147109081 has 16 divisors (see below), whose sum is σ = 3083873856. Its totient is φ = 1320935616.

The previous prime is 2147109077. The next prime is 2147109103. The reversal of 2147109081 is 1809017412.

It is not a de Polignac number, because 2147109081 - 2² = 2147109077 is a prime.

It is a super-2 number, since 2×2147109081² = 9220154811425329122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2147109281) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 235891 + ... + 244823.

It is an arithmetic number, because the mean of its divisors is an integer number (192742116).

Almost surely, 2^2147109081 is an apocalyptic number.

It is an amenable number.

2147109081 is a deficient number, since it is larger than the sum of its proper divisors (936764775).

2147109081 is a wasteful number, since it uses less digits than its factorization.

2147109081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 15112.

The product of its (nonzero) digits is 4032, while the sum is 33.

The square root of 2147109081 is about 46336.9084100353. The cubic root of 2147109081 is about 1290.0841402963.

The spelling of 2147109081 in words is "two billion, one hundred forty-seven million, one hundred nine thousand, eighty-one".