16101985 has 8 divisors (see below), whose sum is σ = 19650240. Its totient is φ = 12663024.

The previous prime is 16101979. The next prime is 16102003. The reversal of 16101985 is 58910161.

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

It is a cyclic number.

It is not a de Polignac number, because 16101985 - 2³ = 16101977 is a prime.

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 7 ways as a sum of consecutive naturals, for example, 26997 + ... + 27586.

It is an arithmetic number, because the mean of its divisors is an integer number (2456280).

Almost surely, 2^16101985 is an apocalyptic number.

It is an amenable number.

16101985 is a deficient number, since it is larger than the sum of its proper divisors (3548255).

16101985 is an equidigital number, since it uses as much as digits as its factorization.

16101985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 54647.

The product of its (nonzero) digits is 2160, while the sum is 31.

The square root of 16101985 is about 4012.7278751493. The cubic root of 16101985 is about 252.5184641597.

The spelling of 16101985 in words is "sixteen million, one hundred one thousand, nine hundred eighty-five".