2186947133 has 16 divisors (see below), whose sum is σ = 2648070144. Its totient is φ = 1763139840.

The previous prime is 2186947129. The next prime is 2186947171. The reversal of 2186947133 is 3317496812.

It is not a de Polignac number, because 2186947133 - 2² = 2186947129 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2186947193) 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, 218468 + ... + 228258.

It is an arithmetic number, because the mean of its divisors is an integer number (165504384).

Almost surely, 2^2186947133 is an apocalyptic number.

It is an amenable number.

2186947133 is a deficient number, since it is larger than the sum of its proper divisors (461123011).

2186947133 is a wasteful number, since it uses less digits than its factorization.

2186947133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11692.

The product of its digits is 217728, while the sum is 44.

The square root of 2186947133 is about 46764.8065643385. The cubic root of 2186947133 is about 1298.0141540143.

The spelling of 2186947133 in words is "two billion, one hundred eighty-six million, nine hundred forty-seven thousand, one hundred thirty-three".