2665015138 has 8 divisors (see below), whose sum is σ = 4000194000. Its totient is φ = 1331617140.

The previous prime is 2665015127. The next prime is 2665015139. The reversal of 2665015138 is 8315105662.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 2665015097 and 2665015106.

It is not an unprimeable number, because it can be changed into a prime (2665015139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 441468 + ... + 447463.

It is an arithmetic number, because the mean of its divisors is an integer number (500024250).

Almost surely, 2^2665015138 is an apocalyptic number.

2665015138 is a deficient number, since it is larger than the sum of its proper divisors (1335178862).

2665015138 is a wasteful number, since it uses less digits than its factorization.

2665015138 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 890432.

The product of its (nonzero) digits is 43200, while the sum is 37.

The square root of 2665015138 is about 51623.7846152333. The cubic root of 2665015138 is about 1386.4362130765.

The spelling of 2665015138 in words is "two billion, six hundred sixty-five million, fifteen thousand, one hundred thirty-eight".