2185130947 has 8 divisors (see below), whose sum is σ = 2262662640. Its totient is φ = 2107744800.

The previous prime is 2185130933. The next prime is 2185130963. The reversal of 2185130947 is 7490315812.

2185130947 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2185130947 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2185130747) 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, 5368 + ... + 66325.

It is an arithmetic number, because the mean of its divisors is an integer number (282832830).

Almost surely, 2^2185130947 is an apocalyptic number.

2185130947 is a deficient number, since it is larger than the sum of its proper divisors (77531693).

2185130947 is a wasteful number, since it uses less digits than its factorization.

2185130947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72773.

The product of its (nonzero) digits is 60480, while the sum is 40.

The square root of 2185130947 is about 46745.3842320287. The cubic root of 2185130947 is about 1297.6547354760.

The spelling of 2185130947 in words is "two billion, one hundred eighty-five million, one hundred thirty thousand, nine hundred forty-seven".