2479865015 has 4 divisors (see below), whose sum is σ = 2975838024. Its totient is φ = 1983892008.

The previous prime is 2479864999. The next prime is 2479865051. The reversal of 2479865015 is 5105689742.

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: 5105689742 = 2 ⋅2552844871.

It is a cyclic number.

It is not a de Polignac number, because 2479865015 - 2⁴ = 2479864999 is a prime.

It is a super-2 number, since 2×2479865015² = 12299460985241900450, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 247986497 + ... + 247986506.

It is an arithmetic number, because the mean of its divisors is an integer number (743959506).

Almost surely, 2^2479865015 is an apocalyptic number.

2479865015 is a deficient number, since it is larger than the sum of its proper divisors (495973009).

2479865015 is an equidigital number, since it uses as much as digits as its factorization.

2479865015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 495973008.

The product of its (nonzero) digits is 604800, while the sum is 47.

The square root of 2479865015 is about 49798.2430914987. The cubic root of 2479865015 is about 1353.5553317794. Note that the first 3 decimals are identical.

The spelling of 2479865015 in words is "two billion, four hundred seventy-nine million, eight hundred sixty-five thousand, fifteen".