2749205638 has 8 divisors (see below), whose sum is σ = 4129626960. Its totient is φ = 1372663320.

The previous prime is 2749205621. The next prime is 2749205659. The reversal of 2749205638 is 8365029472.

2749205638 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 967978 + ... + 970813.

It is an arithmetic number, because the mean of its divisors is an integer number (516203370).

Almost surely, 2^2749205638 is an apocalyptic number.

2749205638 is a deficient number, since it is larger than the sum of its proper divisors (1380421322).

2749205638 is a wasteful number, since it uses less digits than its factorization.

2749205638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1939502.

The product of its (nonzero) digits is 725760, while the sum is 46.

The square root of 2749205638 is about 52432.8679169850. The cubic root of 2749205638 is about 1400.8847533326.

The spelling of 2749205638 in words is "two billion, seven hundred forty-nine million, two hundred five thousand, six hundred thirty-eight".