16196081 has 4 divisors (see below), whose sum is σ = 17668464. Its totient is φ = 14723700.

The previous prime is 16196069. The next prime is 16196083. The reversal of 16196081 is 18069161.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-16196081 is a prime.

It is a super-2 number, since 2×16196081² = 524626079517122, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (16196083) 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, 736175 + ... + 736196.

It is an arithmetic number, because the mean of its divisors is an integer number (4417116).

Almost surely, 2^16196081 is an apocalyptic number.

16196081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16196081 is a deficient number, since it is larger than the sum of its proper divisors (1472383).

16196081 is a wasteful number, since it uses less digits than its factorization.

16196081 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1472382.

The product of its (nonzero) digits is 2592, while the sum is 32.

The square root of 16196081 is about 4024.4354883636. The cubic root of 16196081 is about 253.0093941634.

Subtracting 16196081 from its reverse (18069161), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 16196081 in words is "sixteen million, one hundred ninety-six thousand, eighty-one".