2162687985 has 32 divisors (see below), whose sum is σ = 3888000000. Its totient is φ = 1140467328.

The previous prime is 2162687983. The next prime is 2162688007. The reversal of 2162687985 is 5897862612.

2162687985 is a `hidden beast` number, since 2 + 1 + 626 + 8 + 7 + 9 + 8 + 5 = 666.

It is not a de Polignac number, because 2162687985 - 2¹ = 2162687983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (2162687983) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 77985 + ... + 102014.

It is an arithmetic number, because the mean of its divisors is an integer number (121500000).

Almost surely, 2^2162687985 is an apocalyptic number.

It is an amenable number.

2162687985 is a deficient number, since it is larger than the sum of its proper divisors (1725312015).

2162687985 is a wasteful number, since it uses less digits than its factorization.

2162687985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 180102 (or 180096 counting only the distinct ones).

The product of its digits is 2903040, while the sum is 54.

The square root of 2162687985 is about 46504.7092776635. The cubic root of 2162687985 is about 1293.1968036093.

The spelling of 2162687985 in words is "two billion, one hundred sixty-two million, six hundred eighty-seven thousand, nine hundred eighty-five".