1493509409 has 16 divisors (see below), whose sum is σ = 1736984832. Its totient is φ = 1257700608.

The previous prime is 1493509363. The next prime is 1493509417. The reversal of 1493509409 is 9049053941.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 1493509409 - 2¹² = 1493505313 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 1493509409.

It is not an unprimeable number, because it can be changed into a prime (1493509469) 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 15 ways as a sum of consecutive naturals, for example, 128837 + ... + 139949.

It is an arithmetic number, because the mean of its divisors is an integer number (108561552).

Almost surely, 2^1493509409 is an apocalyptic number.

It is an amenable number.

1493509409 is a deficient number, since it is larger than the sum of its proper divisors (243475423).

1493509409 is a wasteful number, since it uses less digits than its factorization.

1493509409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11456.

The product of its (nonzero) digits is 174960, while the sum is 44.

The square root of 1493509409 is about 38645.9494513979. The cubic root of 1493509409 is about 1143.0607727092.

The spelling of 1493509409 in words is "one billion, four hundred ninety-three million, five hundred nine thousand, four hundred nine".