2028956985 has 64 divisors (see below), whose sum is σ = 3964066560. Its totient is φ = 976458240.

The previous prime is 2028956977. The next prime is 2028957011. The reversal of 2028956985 is 5896598202.

It is not a de Polignac number, because 2028956985 - 2³ = 2028956977 is a prime.

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 198459 + ... + 208431.

It is an arithmetic number, because the mean of its divisors is an integer number (61938540).

Almost surely, 2^2028956985 is an apocalyptic number.

It is an amenable number.

2028956985 is a deficient number, since it is larger than the sum of its proper divisors (1935109575).

2028956985 is a wasteful number, since it uses less digits than its factorization.

2028956985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10135 (or 10129 counting only the distinct ones).

The product of its (nonzero) digits is 3110400, while the sum is 54.

The square root of 2028956985 is about 45043.9450425915. The cubic root of 2028956985 is about 1265.9725236057.

The spelling of 2028956985 in words is "two billion, twenty-eight million, nine hundred fifty-six thousand, nine hundred eighty-five".