16081394 has 16 divisors (see below), whose sum is σ = 28036800. Its totient is φ = 6774864.

The previous prime is 16081381. The next prime is 16081409. The reversal of 16081394 is 49318061.

It is a happy number.

It is a super-2 number, since 2×16081394² = 517222465966472, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 16081394.

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, 8909 + ... + 10560.

It is an arithmetic number, because the mean of its divisors is an integer number (1752300).

Almost surely, 2^16081394 is an apocalyptic number.

16081394 is a gapful number since it is divisible by the number (14) formed by its first and last digit.

16081394 is a deficient number, since it is larger than the sum of its proper divisors (11955406).

16081394 is a wasteful number, since it uses less digits than its factorization.

16081394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19537.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 16081394 is about 4010.1613433876. The cubic root of 16081394 is about 252.4107791824.

The spelling of 16081394 in words is "sixteen million, eighty-one thousand, three hundred ninety-four".