2750429981 has 8 divisors (see below), whose sum is σ = 2964006360. Its totient is φ = 2537140032.

The previous prime is 2750429939. The next prime is 2750429993. The reversal of 2750429981 is 1899240572.

It can be written as a sum of positive squares in 4 ways, for example, as 176491225 + 2573938756 = 13285^2 + 50734^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2750429981 is a prime.

It is a super-2 number, since 2×2750429981² = 15129730160767320722, 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 (2750429581) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 51446 + ... + 90263.

It is an arithmetic number, because the mean of its divisors is an integer number (370500795).

Almost surely, 2^2750429981 is an apocalyptic number.

It is an amenable number.

2750429981 is a deficient number, since it is larger than the sum of its proper divisors (213576379).

2750429981 is a wasteful number, since it uses less digits than its factorization.

2750429981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 143215.

The product of its (nonzero) digits is 362880, while the sum is 47.

The square root of 2750429981 is about 52444.5419562417. The cubic root of 2750429981 is about 1401.0926811389.

The spelling of 2750429981 in words is "two billion, seven hundred fifty million, four hundred twenty-nine thousand, nine hundred eighty-one".