2049305843638 has 4 divisors (see below), whose sum is σ = 3073958765460. Its totient is φ = 1024652921818.

The previous prime is 2049305843603. The next prime is 2049305843657. The reversal of 2049305843638 is 8363485039402.

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

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 512326460908 + ... + 512326460911.

It is an arithmetic number, because the mean of its divisors is an integer number (768489691365).

Almost surely, 2^{2049305843638} is an apocalyptic number.

2049305843638 is a deficient number, since it is larger than the sum of its proper divisors (1024652921822).

2049305843638 is a wasteful number, since it uses less digits than its factorization.

2049305843638 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1024652921821.

The product of its (nonzero) digits is 14929920, while the sum is 55.

The spelling of 2049305843638 in words is "two trillion, forty-nine billion, three hundred five million, eight hundred forty-three thousand, six hundred thirty-eight".