2151344515 has 4 divisors (see below), whose sum is σ = 2581613424. Its totient is φ = 1721075608.

The previous prime is 2151344513. The next prime is 2151344519. The reversal of 2151344515 is 5154431512.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 2151344515 - 2¹ = 2151344513 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2151344513) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 215134447 + ... + 215134456.

It is an arithmetic number, because the mean of its divisors is an integer number (645403356).

Almost surely, 2^2151344515 is an apocalyptic number.

2151344515 is a deficient number, since it is larger than the sum of its proper divisors (430268909).

2151344515 is an equidigital number, since it uses as much as digits as its factorization.

2151344515 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 430268908.

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

The square root of 2151344515 is about 46382.5884896477. The cubic root of 2151344515 is about 1290.9318657901.

The spelling of 2151344515 in words is "two billion, one hundred fifty-one million, three hundred forty-four thousand, five hundred fifteen".