1609490 has 32 divisors (see below), whose sum is σ = 3136320. Its totient is φ = 592704.

The previous prime is 1609477. The next prime is 1609493. The reversal of 1609490 is 949061.

It is an Ulam number.

It is a plaindrome in base 13.

It is not an unprimeable number, because it can be changed into a prime (1609493) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8072 + ... + 8268.

It is an arithmetic number, because the mean of its divisors is an integer number (98010).

2^1609490 is an apocalyptic number.

1609490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1609490 is a deficient number, since it is larger than the sum of its proper divisors (1526830).

1609490 is a wasteful number, since it uses less digits than its factorization.

1609490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 266.

The product of its (nonzero) digits is 1944, while the sum is 29.

The square root of 1609490 is about 1268.6567699737. The cubic root of 1609490 is about 117.1914949157.

The spelling of 1609490 in words is "one million, six hundred nine thousand, four hundred ninety".