2750853781 has 4 divisors (see below), whose sum is σ = 2962457932. Its totient is φ = 2539249632.

The previous prime is 2750853769. The next prime is 2750853803. The reversal of 2750853781 is 1873580572.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 286624900 + 2464228881 = 16930^2 + 49641^2 .

It is a cyclic number.

It is not a de Polignac number, because 2750853781 - 2⁷ = 2750853653 is a prime.

It is a super-2 number, since 2×2750853781² = 15134393048883991922, 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 (2750853481) 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, 105802056 + ... + 105802081.

It is an arithmetic number, because the mean of its divisors is an integer number (740614483).

Almost surely, 2^2750853781 is an apocalyptic number.

It is an amenable number.

2750853781 is a deficient number, since it is larger than the sum of its proper divisors (211604151).

2750853781 is a wasteful number, since it uses less digits than its factorization.

2750853781 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 211604150.

The product of its (nonzero) digits is 470400, while the sum is 46.

The square root of 2750853781 is about 52448.5822591993. The cubic root of 2750853781 is about 1401.1646398977.

The spelling of 2750853781 in words is "two billion, seven hundred fifty million, eight hundred fifty-three thousand, seven hundred eighty-one".