2166835216 has 40 divisors (see below), whose sum is σ = 5167072064. Its totient is φ = 857208960.

The previous prime is 2166835189. The next prime is 2166835243. The reversal of 2166835216 is 6125386612.

It is an interprime number because it is at equal distance from previous prime (2166835189) and next prime (2166835243).

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, 742650 + ... + 745561.

Almost surely, 2^2166835216 is an apocalyptic number.

2166835216 is a gapful number since it is divisible by the number (26) formed by its first and last digit.

It is an amenable number.

2166835216 is an abundant number, since it is smaller than the sum of its proper divisors (3000236848).

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

2166835216 is a wasteful number, since it uses less digits than its factorization.

2166835216 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1488239 (or 1488233 counting only the distinct ones).

The product of its digits is 103680, while the sum is 40.

The square root of 2166835216 is about 46549.2772876228. The cubic root of 2166835216 is about 1294.0228992457.

The spelling of 2166835216 in words is "two billion, one hundred sixty-six million, eight hundred thirty-five thousand, two hundred sixteen".