2756218381 has 8 divisors (see below), whose sum is σ = 3335256000. Its totient is φ = 2223503808.

The previous prime is 2756218301. The next prime is 2756218397. The reversal of 2756218381 is 1838126572.

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 2756218381 - 2⁷ = 2756218253 is a prime.

It is a super-2 number, since 2×2756218381² = 15193479527524522322, 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 (2756218301) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 11580631 + ... + 11580868.

It is an arithmetic number, because the mean of its divisors is an integer number (416907000).

Almost surely, 2^2756218381 is an apocalyptic number.

It is an amenable number.

2756218381 is a deficient number, since it is larger than the sum of its proper divisors (579037619).

2756218381 is a wasteful number, since it uses less digits than its factorization.

2756218381 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 23161523.

The product of its digits is 161280, while the sum is 43.

The square root of 2756218381 is about 52499.6988658030. The cubic root of 2756218381 is about 1402.0748793444.

The spelling of 2756218381 in words is "two billion, seven hundred fifty-six million, two hundred eighteen thousand, three hundred eighty-one".