2145405012 has 24 divisors (see below), whose sum is σ = 5076453312. Its totient is φ = 705062400.

The previous prime is 2145405011. The next prime is 2145405013. The reversal of 2145405012 is 2105045412.

It is an interprime number because it is at equal distance from previous prime (2145405011) and next prime (2145405013).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145405011) 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, 1258189 + ... + 1259892.

It is an arithmetic number, because the mean of its divisors is an integer number (211518888).

Almost surely, 2^2145405012 is an apocalyptic number.

It is an amenable number.

2145405012 is an abundant number, since it is smaller than the sum of its proper divisors (2931048300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2145405012 is a wasteful number, since it uses less digits than its factorization.

2145405012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2518159 (or 2518157 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 24.

The square root of 2145405012 is about 46318.5169451700. The cubic root of 2145405012 is about 1289.7427550267.

The spelling of 2145405012 in words is "two billion, one hundred forty-five million, four hundred five thousand, twelve".