1307189 has 8 divisors (see below), whose sum is σ = 1417752. Its totient is φ = 1198080.

The previous prime is 1307183. The next prime is 1307197. The reversal of 1307189 is 9817031.

It can be written as a sum of positive squares in 4 ways, for example, as 3025 + 1304164 = 55^2 + 1142^2 .

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

It is not a de Polignac number, because 1307189 - 2⁸ = 1306933 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1307183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2249 + ... + 2769.

It is an arithmetic number, because the mean of its divisors is an integer number (177219).

2^1307189 is an apocalyptic number.

It is an amenable number.

1307189 is a deficient number, since it is larger than the sum of its proper divisors (110563).

1307189 is a wasteful number, since it uses less digits than its factorization.

1307189 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 727.

The product of its (nonzero) digits is 1512, while the sum is 29.

The square root of 1307189 is about 1143.3236637103. The cubic root of 1307189 is about 109.3400986874.

The spelling of 1307189 in words is "one million, three hundred seven thousand, one hundred eighty-nine".