2145541315 has 16 divisors (see below), whose sum is σ = 2689547328. Its totient is φ = 1639998976.

The previous prime is 2145541309. The next prime is 2145541337. The reversal of 2145541315 is 5131455412.

It is a cyclic number.

It is not a de Polignac number, because 2145541315 - 2¹¹ = 2145539267 is a prime.

It is a Duffinian number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 99807 + ... + 119383.

It is an arithmetic number, because the mean of its divisors is an integer number (168096708).

Almost surely, 2^2145541315 is an apocalyptic number.

2145541315 is a deficient number, since it is larger than the sum of its proper divisors (544006013).

2145541315 is a wasteful number, since it uses less digits than its factorization.

2145541315 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20558.

The product of its digits is 12000, while the sum is 31.

The square root of 2145541315 is about 46319.9882879951. The cubic root of 2145541315 is about 1289.7700679867.

Adding to 2145541315 its reverse (5131455412), we get a palindrome (7276996727).

The spelling of 2145541315 in words is "two billion, one hundred forty-five million, five hundred forty-one thousand, three hundred fifteen".