1609146 has 96 divisors (see below), whose sum is σ = 4612608. Its totient is φ = 408240.

The previous prime is 1609141. The next prime is 1609147. The reversal of 1609146 is 6419061.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 37401 + ... + 37443.

It is an arithmetic number, because the mean of its divisors is an integer number (48048).

2^1609146 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1609146, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2306304).

1609146 is an abundant number, since it is smaller than the sum of its proper divisors (3003462).

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

1609146 is a wasteful number, since it uses less digits than its factorization.

1609146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 78 (or 66 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 27.

The square root of 1609146 is about 1268.5211862638. The cubic root of 1609146 is about 117.1831451182.

The spelling of 1609146 in words is "one million, six hundred nine thousand, one hundred forty-six".