1897349 has 4 divisors (see below), whose sum is σ = 1900236. Its totient is φ = 1894464.

The previous prime is 1897327. The next prime is 1897361. The reversal of 1897349 is 9437981.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 20449 + 1876900 = 143^2 + 1370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1897349 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 (1897949) 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, 77 + ... + 1949.

It is an arithmetic number, because the mean of its divisors is an integer number (475059).

2^1897349 is an apocalyptic number.

It is an amenable number.

1897349 is a deficient number, since it is larger than the sum of its proper divisors (2887).

1897349 is a wasteful number, since it uses less digits than its factorization.

1897349 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2886.

The product of its digits is 54432, while the sum is 41.

The square root of 1897349 is about 1377.4429207775. The cubic root of 1897349 is about 123.7986021384.

The spelling of 1897349 in words is "one million, eight hundred ninety-seven thousand, three hundred forty-nine".