2668309495 has 4 divisors (see below), whose sum is σ = 3201971400. Its totient is φ = 2134647592.

The previous prime is 2668309493. The next prime is 2668309507. The reversal of 2668309495 is 5949038662.

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 2668309495 - 2¹ = 2668309493 is a prime.

It is a super-3 number, since 3×2668309495³ (a number of 29 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2668309493) 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, 266830945 + ... + 266830954.

It is an arithmetic number, because the mean of its divisors is an integer number (800492850).

Almost surely, 2^2668309495 is an apocalyptic number.

2668309495 is a deficient number, since it is larger than the sum of its proper divisors (533661905).

2668309495 is an equidigital number, since it uses as much as digits as its factorization.

2668309495 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 533661904.

The product of its (nonzero) digits is 2799360, while the sum is 52.

The square root of 2668309495 is about 51655.6821172657. The cubic root of 2668309495 is about 1387.0072586298.

The spelling of 2668309495 in words is "two billion, six hundred sixty-eight million, three hundred nine thousand, four hundred ninety-five".