2185129045 has 8 divisors (see below), whose sum is σ = 2860532640. Its totient is φ = 1589184720.

The previous prime is 2185129043. The next prime is 2185129049. The reversal of 2185129045 is 5409215812.

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

It is not a de Polignac number, because 2185129045 - 2¹ = 2185129043 is a prime.

It is a super-2 number, since 2×2185129045² = 9549577886605224050, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 2185128995 and 2185129013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2185129043) 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, 19864755 + ... + 19864864.

It is an arithmetic number, because the mean of its divisors is an integer number (357566580).

Almost surely, 2^2185129045 is an apocalyptic number.

It is an amenable number.

2185129045 is a deficient number, since it is larger than the sum of its proper divisors (675403595).

2185129045 is a wasteful number, since it uses less digits than its factorization.

2185129045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39729635.

The product of its (nonzero) digits is 28800, while the sum is 37.

The square root of 2185129045 is about 46745.3638877697. The cubic root of 2185129045 is about 1297.6543589707.

The spelling of 2185129045 in words is "two billion, one hundred eighty-five million, one hundred twenty-nine thousand, forty-five".