16136161 has 4 divisors (see below), whose sum is σ = 16144324. Its totient is φ = 16128000.

The previous prime is 16136117. The next prime is 16136167. The reversal of 16136161 is 16163161.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 16163161 = 7 ⋅2309023.

It can be written as a sum of positive squares in 2 ways, for example, as 10758400 + 5377761 = 3280^2 + 2319^2 .

It is a cyclic number.

It is not a de Polignac number, because 16136161 - 2⁹ = 16135649 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (16136167) 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, 961 + ... + 5761.

It is an arithmetic number, because the mean of its divisors is an integer number (4036081).

Almost surely, 2^16136161 is an apocalyptic number.

It is an amenable number.

16136161 is a deficient number, since it is larger than the sum of its proper divisors (8163).

16136161 is an equidigital number, since it uses as much as digits as its factorization.

16136161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8162.

The product of its digits is 648, while the sum is 25.

The square root of 16136161 is about 4016.9840676806. The cubic root of 16136161 is about 252.6969923045.

Subtracting 16136161 from its reverse (16163161), we obtain a cube (27000 = 30³).

It can be divided in two parts, 16 and 136161, that multiplied together give a square (2178576 = 1476²).

The spelling of 16136161 in words is "sixteen million, one hundred thirty-six thousand, one hundred sixty-one".