1609144 has 16 divisors (see below), whose sum is σ = 3060720. Its totient is φ = 792960.

The previous prime is 1609141. The next prime is 1609147. The reversal of 1609144 is 4419061.

It is an interprime number because it is at equal distance from previous prime (1609141) and next prime (1609147).

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 polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 849 + ... + 1984.

It is an arithmetic number, because the mean of its divisors is an integer number (191295).

2^1609144 is an apocalyptic number.

It is an amenable number.

1609144 is a deficient number, since it is larger than the sum of its proper divisors (1451576).

1609144 is a wasteful number, since it uses less digits than its factorization.

1609144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2910 (or 2906 counting only the distinct ones).

The product of its (nonzero) digits is 864, while the sum is 25.

The square root of 1609144 is about 1268.5203979440. The cubic root of 1609144 is about 117.1830965694.

The spelling of 1609144 in words is "one million, six hundred nine thousand, one hundred forty-four".