16130081 has 4 divisors (see below), whose sum is σ = 17596464. Its totient is φ = 14663700.

The previous prime is 16130077. The next prime is 16130083. The reversal of 16130081 is 18003161.

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, and also an emirpimes, since its reverse is a distinct semiprime: 18003161 = 11 ⋅1636651.

It is a cyclic number.

It is not a de Polignac number, because 16130081 - 2² = 16130077 is a prime.

It is a super-2 number, since 2×16130081² = 520359026133122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16130083) 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, 733175 + ... + 733196.

It is an arithmetic number, because the mean of its divisors is an integer number (4399116).

Almost surely, 2^16130081 is an apocalyptic number.

16130081 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

16130081 is a deficient number, since it is larger than the sum of its proper divisors (1466383).

16130081 is a wasteful number, since it uses less digits than its factorization.

16130081 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1466382.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 16130081 is about 4016.2272097081. The cubic root of 16130081 is about 252.6652501257.

Subtracting 16130081 from its reverse (18003161), we obtain a triangular number (1873080 = T₁₉₃₅).

The spelling of 16130081 in words is "sixteen million, one hundred thirty thousand, eighty-one".