2185755738 has 8 divisors (see below), whose sum is σ = 4371511488. Its totient is φ = 728585244.

The previous prime is 2185755709. The next prime is 2185755743. The reversal of 2185755738 is 8375575812.

2185755738 is digitally balanced in base 2 and base 4, because in such bases it contains all the possibile digits an equal number of times.

It is a sphenic number, since it is the product of 3 distinct primes.

2185755738 is an admirable number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 182146306 + ... + 182146317.

It is an arithmetic number, because the mean of its divisors is an integer number (546438936).

Almost surely, 2^2185755738 is an apocalyptic number.

2185755738 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

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

2185755738 is a wasteful number, since it uses less digits than its factorization.

2185755738 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 364292628.

The product of its digits is 2352000, while the sum is 51.

The square root of 2185755738 is about 46752.0666708970. The cubic root of 2185755738 is about 1297.7784024718.

The spelling of 2185755738 in words is "two billion, one hundred eighty-five million, seven hundred fifty-five thousand, seven hundred thirty-eight".