1609245 has 24 divisors (see below), whose sum is σ = 3043872. Its totient is φ = 780000.

The previous prime is 1609219. The next prime is 1609247. The reversal of 1609245 is 5429061.

It is not a de Polignac number, because 1609245 - 2¹⁴ = 1592861 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1609247) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 1131 + ... + 2120.

It is an arithmetic number, because the mean of its divisors is an integer number (126828).

2^1609245 is an apocalyptic number.

1609245 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1609245 is a deficient number, since it is larger than the sum of its proper divisors (1434627).

1609245 is a wasteful number, since it uses less digits than its factorization.

1609245 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3273 (or 3270 counting only the distinct ones).

The product of its (nonzero) digits is 2160, while the sum is 27.

The square root of 1609245 is about 1268.5602074793. The cubic root of 1609245 is about 117.1855482342.

The spelling of 1609245 in words is "one million, six hundred nine thousand, two hundred forty-five".