2748633981 has 4 divisors (see below), whose sum is σ = 3664845312. Its totient is φ = 1832422652.

The previous prime is 2748633961. The next prime is 2748633997. The reversal of 2748633981 is 1893368472.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 2748633981 - 2¹⁵ = 2748601213 is a prime.

It is a super-2 number, since 2×2748633981² = 15109977523015816722, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2748633961) 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 3 ways as a sum of consecutive naturals, for example, 458105661 + ... + 458105666.

It is an arithmetic number, because the mean of its divisors is an integer number (916211328).

Almost surely, 2^2748633981 is an apocalyptic number.

It is an amenable number.

2748633981 is a deficient number, since it is larger than the sum of its proper divisors (916211331).

2748633981 is an equidigital number, since it uses as much as digits as its factorization.

2748633981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 916211330.

The product of its digits is 1741824, while the sum is 51.

The square root of 2748633981 is about 52427.4163105526. The cubic root of 2748633981 is about 1400.7876487875.

The spelling of 2748633981 in words is "two billion, seven hundred forty-eight million, six hundred thirty-three thousand, nine hundred eighty-one".