16219494 has 32 divisors (see below), whose sum is σ = 36589440. Its totient is φ = 5324616.

The previous prime is 16219481. The next prime is 16219499. The reversal of 16219494 is 49491261.

It is a happy number.

16219494 is a `hidden beast` number, since 162 + 1 + 9 + 494 = 666.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (16219499) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1377 + ... + 5859.

It is an arithmetic number, because the mean of its divisors is an integer number (1143420).

Almost surely, 2^16219494 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 16219494, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (18294720).

16219494 is an abundant number, since it is smaller than the sum of its proper divisors (20369946).

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

16219494 is a wasteful number, since it uses less digits than its factorization.

16219494 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4561 (or 4555 counting only the distinct ones).

The product of its digits is 15552, while the sum is 36.

The square root of 16219494 is about 4027.3432930407. The cubic root of 16219494 is about 253.1312519718.

The spelling of 16219494 in words is "sixteen million, two hundred nineteen thousand, four hundred ninety-four".