2638256755 has 8 divisors (see below), whose sum is σ = 3172411872. Its totient is φ = 2106269568.

The previous prime is 2638256717. The next prime is 2638256779. The reversal of 2638256755 is 5576528362.

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 2638256755 - 2¹⁹ = 2637732467 is a prime.

It is a super-3 number, since 3×2638256755³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2638256699 and 2638256708.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 539302 + ... + 544171.

It is an arithmetic number, because the mean of its divisors is an integer number (396551484).

Almost surely, 2^2638256755 is an apocalyptic number.

2638256755 is a deficient number, since it is larger than the sum of its proper divisors (534155117).

2638256755 is a wasteful number, since it uses less digits than its factorization.

2638256755 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1083965.

The product of its digits is 3024000, while the sum is 49.

The square root of 2638256755 is about 51363.9635834307. The cubic root of 2638256755 is about 1381.7803729405.

The spelling of 2638256755 in words is "two billion, six hundred thirty-eight million, two hundred fifty-six thousand, seven hundred fifty-five".