2665541019 has 8 divisors (see below), whose sum is σ = 3557316672. Its totient is φ = 1775396360.

The previous prime is 2665540981. The next prime is 2665541029. The reversal of 2665541019 is 9101455662.

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

It is a cyclic number.

It is not a de Polignac number, because 2665541019 - 2¹¹ = 2665538971 is a prime.

It is a super-2 number, since 2×2665541019² = 14210217847943116722, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2665541029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 403929 + ... + 410474.

It is an arithmetic number, because the mean of its divisors is an integer number (444664584).

Almost surely, 2^2665541019 is an apocalyptic number.

2665541019 is a deficient number, since it is larger than the sum of its proper divisors (891775653).

2665541019 is a wasteful number, since it uses less digits than its factorization.

2665541019 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 815497.

The product of its (nonzero) digits is 64800, while the sum is 39.

The square root of 2665541019 is about 51628.8777623531. The cubic root of 2665541019 is about 1386.5274011151.

The spelling of 2665541019 in words is "two billion, six hundred sixty-five million, five hundred forty-one thousand, nineteen".