1888897 has 2 divisors, whose sum is σ = 1888898. Its totient is φ = 1888896.

The previous prime is 1888879. The next prime is 1888907. The reversal of 1888897 is 7988881.

Together with previous prime (1888879) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1527696 + 361201 = 1236^2 + 601^2 .

It is a cyclic number.

It is not a de Polignac number, because 1888897 - 2⁷ = 1888769 is a prime.

It is a super-3 number, since 3×1888897³ = 20218367453793330819, which contains 333 as substring.

1888897 is a lucky number.

It is a self number, because there is not a number n which added to its sum of digits gives 1888897.

It is not a weakly prime, because it can be changed into another prime (1888807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 944448 + 944449.

It is an arithmetic number, because the mean of its divisors is an integer number (944449).

2^1888897 is an apocalyptic number.

It is an amenable number.

1888897 is a deficient number, since it is larger than the sum of its proper divisors (1).

1888897 is an equidigital number, since it uses as much as digits as its factorization.

1888897 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 258048, while the sum is 49.

The square root of 1888897 is about 1374.3714927195. The cubic root of 1888897 is about 123.6145025801.

The spelling of 1888897 in words is "one million, eight hundred eighty-eight thousand, eight hundred ninety-seven".