1509013 has 4 divisors (see below), whose sum is σ = 1646208. Its totient is φ = 1371820.

The previous prime is 1508993. The next prime is 1509019. The reversal of 1509013 is 3109051.

It is the 502-nd star number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1509013 - 2⁵ = 1508981 is a prime.

It is a Duffinian number.

1509013 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1509019) 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, 68581 + ... + 68602.

It is an arithmetic number, because the mean of its divisors is an integer number (411552).

2^1509013 is an apocalyptic number.

It is an amenable number.

1509013 is a deficient number, since it is larger than the sum of its proper divisors (137195).

1509013 is a wasteful number, since it uses less digits than its factorization.

1509013 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 137194.

The product of its (nonzero) digits is 135, while the sum is 19.

The square root of 1509013 is about 1228.4189024921. The cubic root of 1509013 is about 114.7002401164.

The spelling of 1509013 in words is "one million, five hundred nine thousand, thirteen".