2135371856 has 40 divisors (see below), whose sum is σ = 4217829000. Its totient is φ = 1047006720.

The previous prime is 2135371831. The next prime is 2135371897. The reversal of 2135371856 is 6581735312.

It can be written as a sum of positive squares in 4 ways, for example, as 30030400 + 2105341456 = 5480^2 + 45884^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 337490 + ... + 343758.

It is an arithmetic number, because the mean of its divisors is an integer number (105445725).

Almost surely, 2^2135371856 is an apocalyptic number.

It is an amenable number.

2135371856 is a deficient number, since it is larger than the sum of its proper divisors (2082457144).

2135371856 is a wasteful number, since it uses less digits than its factorization.

2135371856 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6687 (or 6681 counting only the distinct ones).

The product of its digits is 151200, while the sum is 41.

The square root of 2135371856 is about 46210.0839211530. The cubic root of 2135371856 is about 1287.7290847715.

The spelling of 2135371856 in words is "two billion, one hundred thirty-five million, three hundred seventy-one thousand, eight hundred fifty-six".