16161633 has 16 divisors (see below), whose sum is σ = 24716800. Its totient is φ = 10426320.

The previous prime is 16161631. The next prime is 16161641. The reversal of 16161633 is 33616161.

It is a happy number.

16161633 is a `hidden beast` number, since 1 + 616 + 16 + 33 = 666.

It is not a de Polignac number, because 16161633 - 2¹ = 16161631 is a prime.

It is a super-2 number, since 2×16161633² = 522396762453378, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 16161597 and 16161606.

It is not an unprimeable number, because it can be changed into a prime (16161631) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8818 + ... + 10491.

It is an arithmetic number, because the mean of its divisors is an integer number (1544800).

Almost surely, 2^16161633 is an apocalyptic number.

It is an amenable number.

16161633 is a deficient number, since it is larger than the sum of its proper divisors (8555167).

16161633 is a wasteful number, since it uses less digits than its factorization.

16161633 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19349 (or 19343 counting only the distinct ones).

The product of its digits is 1944, while the sum is 27.

The square root of 16161633 is about 4020.1533552839. The cubic root of 16161633 is about 252.8298887193.

Adding to 16161633 its reverse (33616161), we get a palindrome (49777794).

It can be divided in two parts, 1616 and 1633, that added together give a square (3249 = 57²).

The spelling of 16161633 in words is "sixteen million, one hundred sixty-one thousand, six hundred thirty-three".