2143166515 has 16 divisors (see below), whose sum is σ = 2940032448. Its totient is φ = 1469183616.

The previous prime is 2143166513. The next prime is 2143166527. The reversal of 2143166515 is 5156613412.

It is a cyclic number.

It is not a de Polignac number, because 2143166515 - 2¹ = 2143166513 is a prime.

It is a super-2 number, since 2×2143166515² = 9186325422034490450, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2143166513) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 166449 + ... + 178861.

It is an arithmetic number, because the mean of its divisors is an integer number (183752028).

Almost surely, 2^2143166515 is an apocalyptic number.

2143166515 is a deficient number, since it is larger than the sum of its proper divisors (796865933).

2143166515 is a wasteful number, since it uses less digits than its factorization.

2143166515 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17358.

The product of its digits is 21600, while the sum is 34.

The square root of 2143166515 is about 46294.3464690884. The cubic root of 2143166515 is about 1289.2940301202.

Adding to 2143166515 its reverse (5156613412), we get a palindrome (7299779927).

The spelling of 2143166515 in words is "two billion, one hundred forty-three million, one hundred sixty-six thousand, five hundred fifteen".