1000000015 has 32 divisors (see below), whose sum is σ = 1422360576. Its totient is φ = 660458880.

The previous prime is 1000000009. The next prime is 1000000021. The reversal of 1000000015 is 5100000001.

It is an interprime number because it is at equal distance from previous prime (1000000009) and next prime (1000000021).

It is not a de Polignac number, because 1000000015 - 2³ = 1000000007 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (7).

1000000015 is a modest number, since divided by 15 gives 10 as remainder.

It is a junction number, because it is equal to n+sod(n) for n = 999999944 and 1000000007.

It is a congruent 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 31 ways as a sum of consecutive naturals, for example, 239889 + ... + 244021.

It is an arithmetic number, because the mean of its divisors is an integer number (44448768).

Almost surely, 2^1000000015 is an apocalyptic number.

1000000015 is a deficient number, since it is larger than the sum of its proper divisors (422360561).

1000000015 is a wasteful number, since it uses less digits than its factorization.

1000000015 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4399.

The product of its (nonzero) digits is 5, while the sum is 7.

The square root of 1000000015 is about 31622.7768388546. The cubic root of 1000000015 is about 1000.0000050000. Note that the first 5 decimals are identical.

Adding to 1000000015 its reverse (5100000001), we get a palindrome (6100000016).

It can be divided in two parts, 100000001 and 5, that multiplied together give a palindrome (500000005).

The spelling of 1000000015 in words is "one billion, fifteen", and thus it is an aban number and an uban number.