2028891137 has 12 divisors (see below), whose sum is σ = 2510818560. Its totient is φ = 1605275568.

The previous prime is 2028891113. The next prime is 2028891143. The reversal of 2028891137 is 7311988202.

It is not a de Polignac number, because 2028891137 - 2²⁸ = 1760455681 is a prime.

It is a Smith number, since the sum of its digits (41) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2028891094 and 2028891103.

It is not an unprimeable number, because it can be changed into a prime (2028896137) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 856337 + ... + 858702.

It is an arithmetic number, because the mean of its divisors is an integer number (209234880).

Almost surely, 2^2028891137 is an apocalyptic number.

It is an amenable number.

2028891137 is a deficient number, since it is larger than the sum of its proper divisors (481927423).

2028891137 is a wasteful number, since it uses less digits than its factorization.

2028891137 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1715072 (or 1715059 counting only the distinct ones).

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 2028891137 is about 45043.2141060116. The cubic root of 2028891137 is about 1265.9588281190.

The spelling of 2028891137 in words is "two billion, twenty-eight million, eight hundred ninety-one thousand, one hundred thirty-seven".