2801649239838 has 96 divisors (see below), whose sum is σ = 6229615392000. Its totient is φ = 909761200128.

The previous prime is 2801649239821. The next prime is 2801649239839. The reversal of 2801649239838 is 8389329461082.

2801649239838 is a `hidden beast` number, since 2 + 80 + 1 + 6 + 492 + 39 + 8 + 38 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2801649239839) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 34612438 + ... + 34693286.

It is an arithmetic number, because the mean of its divisors is an integer number (64891827000).

Almost surely, 2^{2801649239838} is an apocalyptic number.

2801649239838 is an abundant number, since it is smaller than the sum of its proper divisors (3427966152162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2801649239838 is a wasteful number, since it uses less digits than its factorization.

2801649239838 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 81266 (or 81263 counting only the distinct ones).

The product of its (nonzero) digits is 35831808, while the sum is 63.

The spelling of 2801649239838 in words is "two trillion, eight hundred one billion, six hundred forty-nine million, two hundred thirty-nine thousand, eight hundred thirty-eight".