2651287915 has 4 divisors (see below), whose sum is σ = 3181545504. Its totient is φ = 2121030328.

The previous prime is 2651287889. The next prime is 2651287939. The reversal of 2651287915 is 5197821562.

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 2651287915 - 2⁵ = 2651287883 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 (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 265128787 + ... + 265128796.

It is an arithmetic number, because the mean of its divisors is an integer number (795386376).

Almost surely, 2^2651287915 is an apocalyptic number.

2651287915 is a deficient number, since it is larger than the sum of its proper divisors (530257589).

2651287915 is an equidigital number, since it uses as much as digits as its factorization.

2651287915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 530257588.

The product of its digits is 302400, while the sum is 46.

The square root of 2651287915 is about 51490.6585217163. The cubic root of 2651287915 is about 1384.0516500028.

The spelling of 2651287915 in words is "two billion, six hundred fifty-one million, two hundred eighty-seven thousand, nine hundred fifteen".