2145633805 has 48 divisors (see below), whose sum is σ = 3188808000. Its totient is φ = 1377927936.

The previous prime is 2145633803. The next prime is 2145633827. The reversal of 2145633805 is 5083365412.

It is not a de Polignac number, because 2145633805 - 2¹ = 2145633803 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145633803) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 411706 + ... + 416884.

It is an arithmetic number, because the mean of its divisors is an integer number (66433500).

Almost surely, 2^2145633805 is an apocalyptic number.

It is an amenable number.

2145633805 is a deficient number, since it is larger than the sum of its proper divisors (1043174195).

2145633805 is a wasteful number, since it uses less digits than its factorization.

2145633805 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5306 (or 5299 counting only the distinct ones).

The product of its (nonzero) digits is 86400, while the sum is 37.

The square root of 2145633805 is about 46320.9866583172. The cubic root of 2145633805 is about 1289.7886008575.

The spelling of 2145633805 in words is "two billion, one hundred forty-five million, six hundred thirty-three thousand, eight hundred five".