1351609 has 8 divisors (see below), whose sum is σ = 1552320. Its totient is φ = 1152816.

The previous prime is 1351589. The next prime is 1351621. The reversal of 1351609 is 9061531.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 1351609 - 2¹⁵ = 1318841 is a prime.

1351609 is a lucky number.

It is a nialpdrome in base 12.

It is not an unprimeable number, because it can be changed into a prime (1351639) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1722 + ... + 2380.

It is an arithmetic number, because the mean of its divisors is an integer number (194040).

2^1351609 is an apocalyptic number.

It is an amenable number.

1351609 is a deficient number, since it is larger than the sum of its proper divisors (200711).

1351609 is an equidigital number, since it uses as much as digits as its factorization.

1351609 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 959.

The product of its (nonzero) digits is 810, while the sum is 25.

The square root of 1351609 is about 1162.5872010305. The cubic root of 1351609 is about 110.5648357244.

The spelling of 1351609 in words is "one million, three hundred fifty-one thousand, six hundred nine".