2145895129 has 4 divisors (see below), whose sum is σ = 2452451584. Its totient is φ = 1839338676.

The previous prime is 2145895127. The next prime is 2145895181. The reversal of 2145895129 is 9215985412.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2145895129 - 2¹ = 2145895127 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2145895127) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 153278217 + ... + 153278230.

It is an arithmetic number, because the mean of its divisors is an integer number (613112896).

Almost surely, 2^2145895129 is an apocalyptic number.

It is an amenable number.

2145895129 is a deficient number, since it is larger than the sum of its proper divisors (306556455).

2145895129 is an equidigital number, since it uses as much as digits as its factorization.

2145895129 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 306556454.

The product of its digits is 259200, while the sum is 46.

The square root of 2145895129 is about 46323.8073672707. The cubic root of 2145895129 is about 1289.8409613042.

The spelling of 2145895129 in words is "two billion, one hundred forty-five million, eight hundred ninety-five thousand, one hundred twenty-nine".