2043215513 has 4 divisors (see below), whose sum is σ = 2043350820. Its totient is φ = 2043080208.

The previous prime is 2043215509. The next prime is 2043215519. The reversal of 2043215513 is 3155123402.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 3155123402 = 2 ⋅1577561701.

It can be written as a sum of positive squares in 2 ways, for example, as 1241646169 + 801569344 = 35237^2 + 28312^2 .

It is a cyclic number.

It is not a de Polignac number, because 2043215513 - 2² = 2043215509 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2043215519) 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 3 ways as a sum of consecutive naturals, for example, 41678 + ... + 76311.

It is an arithmetic number, because the mean of its divisors is an integer number (510837705).

Almost surely, 2^2043215513 is an apocalyptic number.

It is an amenable number.

2043215513 is a deficient number, since it is larger than the sum of its proper divisors (135307).

2043215513 is a wasteful number, since it uses less digits than its factorization.

2043215513 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 135306.

The product of its (nonzero) digits is 3600, while the sum is 26.

The square root of 2043215513 is about 45201.9414737907. The cubic root of 2043215513 is about 1268.9311512459.

Adding to 2043215513 its reverse (3155123402), we get a palindrome (5198338915).

The spelling of 2043215513 in words is "two billion, forty-three million, two hundred fifteen thousand, five hundred thirteen".