2163617906 has 32 divisors (see below), whose sum is σ = 3522631680. Its totient is φ = 994190400.

The previous prime is 2163617903. The next prime is 2163617909. The reversal of 2163617906 is 6097163612.

It is an interprime number because it is at equal distance from previous prime (2163617903) and next prime (2163617909).

It is not an unprimeable number, because it can be changed into a prime (2163617903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 99815 + ... + 119541.

It is an arithmetic number, because the mean of its divisors is an integer number (110082240).

Almost surely, 2^2163617906 is an apocalyptic number.

2163617906 is a deficient number, since it is larger than the sum of its proper divisors (1359013774).

2163617906 is a wasteful number, since it uses less digits than its factorization.

2163617906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19850.

The product of its (nonzero) digits is 81648, while the sum is 41.

The square root of 2163617906 is about 46514.7063411132. The cubic root of 2163617906 is about 1293.3821283152.

The spelling of 2163617906 in words is "two billion, one hundred sixty-three million, six hundred seventeen thousand, nine hundred six".