2665941803 has 4 divisors (see below), whose sum is σ = 3046790640. Its totient is φ = 2285092968.

The previous prime is 2665941793. The next prime is 2665941847. The reversal of 2665941803 is 3081495662.

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 2665941803 - 2¹² = 2665937707 is a prime.

It is a super-3 number, since 3×2665941803³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2665941403) 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, 190424408 + ... + 190424421.

It is an arithmetic number, because the mean of its divisors is an integer number (761697660).

Almost surely, 2^2665941803 is an apocalyptic number.

2665941803 is a deficient number, since it is larger than the sum of its proper divisors (380848837).

2665941803 is an equidigital number, since it uses as much as digits as its factorization.

2665941803 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 380848836.

The product of its (nonzero) digits is 311040, while the sum is 44.

The square root of 2665941803 is about 51632.7590101478. The cubic root of 2665941803 is about 1386.5968892159.

The spelling of 2665941803 in words is "two billion, six hundred sixty-five million, nine hundred forty-one thousand, eight hundred three".