2891077838 has 32 divisors (see below), whose sum is σ = 4856578560. Its totient is φ = 1279661760.

The previous prime is 2891077799. The next prime is 2891077853. The reversal of 2891077838 is 8387701982.

It is a self number, because there is not a number n which added to its sum of digits gives 2891077838.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 115481 + ... + 138267.

It is an arithmetic number, because the mean of its divisors is an integer number (151768080).

Almost surely, 2^2891077838 is an apocalyptic number.

2891077838 is a deficient number, since it is larger than the sum of its proper divisors (1965500722).

2891077838 is a wasteful number, since it uses less digits than its factorization.

2891077838 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22952.

The product of its (nonzero) digits is 1354752, while the sum is 53.

The square root of 2891077838 is about 53768.7440619548. The cubic root of 2891077838 is about 1424.5791863819.

The spelling of 2891077838 in words is "two billion, eight hundred ninety-one million, seventy-seven thousand, eight hundred thirty-eight".