1897798 has 16 divisors (see below), whose sum is σ = 3271680. Its totient is φ = 808776.

The previous prime is 1897793. The next prime is 1897801. The reversal of 1897798 is 8977981.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897793) 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, 3723 + ... + 4201.

It is an arithmetic number, because the mean of its divisors is an integer number (204480).

2^1897798 is an apocalyptic number.

1897798 is a deficient number, since it is larger than the sum of its proper divisors (1373882).

1897798 is a wasteful number, since it uses less digits than its factorization.

1897798 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 771.

The product of its digits is 254016, while the sum is 49.

The square root of 1897798 is about 1377.6058942963. The cubic root of 1897798 is about 123.8083668484.

The spelling of 1897798 in words is "one million, eight hundred ninety-seven thousand, seven hundred ninety-eight".