16361964 has 54 divisors (see below), whose sum is σ = 43685460. Its totient is φ = 5162832.

The previous prime is 16361963. The next prime is 16361977. The reversal of 16361964 is 46916361.

16361964 is a `hidden beast` number, since 1 + 636 + 19 + 6 + 4 = 666.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a nude number because it is divisible by every one of its digits.

It is not an unprimeable number, because it can be changed into a prime (16361963) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 12367 + ... + 13625.

It is an arithmetic number, because the mean of its divisors is an integer number (808990).

Almost surely, 2^16361964 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16361964, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (21842730).

16361964 is an abundant number, since it is smaller than the sum of its proper divisors (27323496).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

16361964 is a wasteful number, since it uses less digits than its factorization.

16361964 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1307 (or 1283 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 16361964 is about 4044.9924598199. The cubic root of 16361964 is about 253.8702501390.

It can be divided in two parts, 1636 and 1964, that added together give a square (3600 = 60²).

The spelling of 16361964 in words is "sixteen million, three hundred sixty-one thousand, nine hundred sixty-four".