16081894 has 4 divisors (see below), whose sum is σ = 24122844. Its totient is φ = 8040946.

The previous prime is 16081889. The next prime is 16081909. The reversal of 16081894 is 49818061.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 49818061 = 1097 ⋅45413.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4020472 + ... + 4020475.

It is an arithmetic number, because the mean of its divisors is an integer number (6030711).

Almost surely, 2^16081894 is an apocalyptic number.

16081894 is a deficient number, since it is larger than the sum of its proper divisors (8040950).

16081894 is an equidigital number, since it uses as much as digits as its factorization.

16081894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8040949.

The product of its (nonzero) digits is 13824, while the sum is 37.

The square root of 16081894 is about 4010.2236845343. The cubic root of 16081894 is about 252.4133951265.

The spelling of 16081894 in words is "sixteen million, eighty-one thousand, eight hundred ninety-four".