2169995550 has 24 divisors (see below), whose sum is σ = 5381589336. Its totient is φ = 578665440.

The previous prime is 2169995539. The next prime is 2169995599. The reversal of 2169995550 is 555999612.

It is a junction number, because it is equal to n+sod(n) for n = 2169995493 and 2169995502.

It is a congruent number.

It is an unprimeable number.

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 11 ways as a sum of consecutive naturals, for example, 7233169 + ... + 7233468.

It is an arithmetic number, because the mean of its divisors is an integer number (224232889).

Almost surely, 2^2169995550 is an apocalyptic number.

2169995550 is an abundant number, since it is smaller than the sum of its proper divisors (3211593786).

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

2169995550 is a wasteful number, since it uses less digits than its factorization.

2169995550 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14466652 (or 14466647 counting only the distinct ones).

The product of its (nonzero) digits is 1093500, while the sum is 51.

The square root of 2169995550 is about 46583.2110314435. The cubic root of 2169995550 is about 1294.6517054022.

The spelling of 2169995550 in words is "two billion, one hundred sixty-nine million, nine hundred ninety-five thousand, five hundred fifty".