2691851928 has 32 divisors (see below), whose sum is σ = 6781008960. Its totient is φ = 890433440.

The previous prime is 2691851909. The next prime is 2691851951. The reversal of 2691851928 is 8291581962.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 424950 + ... + 431237.

It is an arithmetic number, because the mean of its divisors is an integer number (211906530).

Almost surely, 2^2691851928 is an apocalyptic number.

It is an amenable number.

2691851928 is an abundant number, since it is smaller than the sum of its proper divisors (4089157032).

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

2691851928 is a wasteful number, since it uses less digits than its factorization.

2691851928 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 856327 (or 856323 counting only the distinct ones).

The product of its digits is 622080, while the sum is 51.

The square root of 2691851928 is about 51883.0601256325. The cubic root of 2691851928 is about 1391.0744979217.

The spelling of 2691851928 in words is "two billion, six hundred ninety-one million, eight hundred fifty-one thousand, nine hundred twenty-eight".