1851359 has 2 divisors, whose sum is σ = 1851360. Its totient is φ = 1851358.

The previous prime is 1851349. The next prime is 1851371. The reversal of 1851359 is 9531581.

It is a weak prime.

It is an emirp because it is prime and its reverse (9531581) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1851359 - 2²⁰ = 802783 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1851319) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 925679 + 925680.

It is an arithmetic number, because the mean of its divisors is an integer number (925680).

2^1851359 is an apocalyptic number.

1851359 is a deficient number, since it is larger than the sum of its proper divisors (1).

1851359 is an equidigital number, since it uses as much as digits as its factorization.

1851359 is an evil number, because the sum of its binary digits is even.

The product of its digits is 5400, while the sum is 32.

The square root of 1851359 is about 1360.6465374961. The cubic root of 1851359 is about 122.7901548976.

The spelling of 1851359 in words is "one million, eight hundred fifty-one thousand, three hundred fifty-nine".