2145541012 has 6 divisors (see below), whose sum is σ = 3754696778. Its totient is φ = 1072770504.

The previous prime is 2145541003. The next prime is 2145541019. The reversal of 2145541012 is 2101455412.

It can be written as a sum of positive squares in only one way, i.e., 1144198276 + 1001342736 = 33826^2 + 31644^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2145541019) 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 as a sum of consecutive naturals, namely, 268192623 + ... + 268192630.

Almost surely, 2^2145541012 is an apocalyptic number.

It is an amenable number.

2145541012 is a deficient number, since it is larger than the sum of its proper divisors (1609155766).

2145541012 is a wasteful number, since it uses less digits than its factorization.

2145541012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 536385257 (or 536385255 counting only the distinct ones).

The product of its (nonzero) digits is 1600, while the sum is 25.

The square root of 2145541012 is about 46319.9850172687. The cubic root of 2145541012 is about 1289.7700072716.

Adding to 2145541012 its reverse (2101455412), we get a palindrome (4246996424).

The spelling of 2145541012 in words is "two billion, one hundred forty-five million, five hundred forty-one thousand, twelve".