16081386 has 8 divisors (see below), whose sum is σ = 32162784. Its totient is φ = 5360460.

The previous prime is 16081381. The next prime is 16081409. The reversal of 16081386 is 68318061.

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

16081386 is an admirable number.

It is a super-2 number, since 2×16081386² = 517221951361992, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (16081381) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1340110 + ... + 1340121.

It is an arithmetic number, because the mean of its divisors is an integer number (4020348).

Almost surely, 2^16081386 is an apocalyptic number.

16081386 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.

16081386 is a wasteful number, since it uses less digits than its factorization.

16081386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2680236.

The product of its (nonzero) digits is 6912, while the sum is 33.

The square root of 16081386 is about 4010.1603459213. The cubic root of 16081386 is about 252.4107373268.

The spelling of 16081386 in words is "sixteen million, eighty-one thousand, three hundred eighty-six".