2137804985 has 16 divisors (see below), whose sum is σ = 2689061760. Its totient is φ = 1629720960.

The previous prime is 2137804973. The next prime is 2137804987. The reversal of 2137804985 is 5894087312.

It is a happy number.

It is not a de Polignac number, because 2137804985 - 2²⁰ = 2136756409 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2137804987) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 112445 + ... + 130074.

It is an arithmetic number, because the mean of its divisors is an integer number (168066360).

Almost surely, 2^2137804985 is an apocalyptic number.

It is an amenable number.

2137804985 is a deficient number, since it is larger than the sum of its proper divisors (551256775).

2137804985 is a wasteful number, since it uses less digits than its factorization.

2137804985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 242608.

The product of its (nonzero) digits is 483840, while the sum is 47.

The square root of 2137804985 is about 46236.4032446297. The cubic root of 2137804985 is about 1288.2179959789.

The spelling of 2137804985 in words is "two billion, one hundred thirty-seven million, eight hundred four thousand, nine hundred eighty-five".