2669528981 has 8 divisors (see below), whose sum is σ = 3073160640. Its totient is φ = 2271464928.

The previous prime is 2669528977. The next prime is 2669528993. The reversal of 2669528981 is 1898259662.

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 2669528981 - 2² = 2669528977 is a prime.

It is a super-2 number, since 2×2669528981² = 14252769960797796722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2669524981) 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, 1390871 + ... + 1392788.

It is an arithmetic number, because the mean of its divisors is an integer number (384145080).

Almost surely, 2^2669528981 is an apocalyptic number.

It is an amenable number.

2669528981 is a deficient number, since it is larger than the sum of its proper divisors (403631659).

2669528981 is a wasteful number, since it uses less digits than its factorization.

2669528981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2783803.

The product of its digits is 3732480, while the sum is 56.

The square root of 2669528981 is about 51667.4847558888. The cubic root of 2669528981 is about 1387.2185257667.

The spelling of 2669528981 in words is "two billion, six hundred sixty-nine million, five hundred twenty-eight thousand, nine hundred eighty-one".