1888349 has 2 divisors, whose sum is σ = 1888350. Its totient is φ = 1888348.

The previous prime is 1888331. The next prime is 1888351. The reversal of 1888349 is 9438881.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1876900 + 11449 = 1370^2 + 107^2 .

It is an emirp because it is prime and its reverse (9438881) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1888349 is a prime.

Together with 1888351, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1888399) 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 as a sum of consecutive naturals, namely, 944174 + 944175.

It is an arithmetic number, because the mean of its divisors is an integer number (944175).

2^1888349 is an apocalyptic number.

It is an amenable number.

1888349 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888349 is an equidigital number, since it uses as much as digits as its factorization.

1888349 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 55296, while the sum is 41.

The square root of 1888349 is about 1374.1721144020. The cubic root of 1888349 is about 123.6025472257.

The spelling of 1888349 in words is "one million, eight hundred eighty-eight thousand, three hundred forty-nine".