2162661810 has 16 divisors (see below), whose sum is σ = 5190388416. Its totient is φ = 576709808.

The previous prime is 2162661799. The next prime is 2162661811. The reversal of 2162661810 is 181662612.

It is a super-2 number, since 2×2162661810² = 9354212208864952200, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (2162661811) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36044334 + ... + 36044393.

It is an arithmetic number, because the mean of its divisors is an integer number (324399276).

Almost surely, 2^2162661810 is an apocalyptic number.

2162661810 is an abundant number, since it is smaller than the sum of its proper divisors (3027726606).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2162661810 is a wasteful number, since it uses less digits than its factorization.

2162661810 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 72088737.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 2162661810 is about 46504.4278537001. The cubic root of 2162661810 is about 1293.1915864038.

It can be divided in two parts, 21626 and 61810, that added together give a triangular number (83436 = T₄₀₈).

The spelling of 2162661810 in words is "two billion, one hundred sixty-two million, six hundred sixty-one thousand, eight hundred ten".