1897361 has 2 divisors, whose sum is σ = 1897362. Its totient is φ = 1897360.

The previous prime is 1897327. The next prime is 1897367. The reversal of 1897361 is 1637981.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1795600 + 101761 = 1340^2 + 319^2 .

It is a cyclic number.

It is not a de Polignac number, because 1897361 - 2¹⁸ = 1635217 is a prime.

It is not a weakly prime, because it can be changed into another prime (1897367) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 948680 + 948681.

It is an arithmetic number, because the mean of its divisors is an integer number (948681).

2^1897361 is an apocalyptic number.

It is an amenable number.

1897361 is a deficient number, since it is larger than the sum of its proper divisors (1).

1897361 is an equidigital number, since it uses as much as digits as its factorization.

1897361 is an evil number, because the sum of its binary digits is even.

The product of its digits is 9072, while the sum is 35.

The square root of 1897361 is about 1377.4472766680. The cubic root of 1897361 is about 123.7988631306.

It can be divided in two parts, 18 and 97361, that added together give a palindrome (97379).

The spelling of 1897361 in words is "one million, eight hundred ninety-seven thousand, three hundred sixty-one".