1897497 has 12 divisors (see below), whose sum is σ = 3132480. Its totient is φ = 1084248.

The previous prime is 1897481. The next prime is 1897517. The reversal of 1897497 is 7947981.

It is not a de Polignac number, because 1897497 - 2⁴ = 1897481 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897097) 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 in 11 ways as a sum of consecutive naturals, for example, 14997 + ... + 15122.

It is an arithmetic number, because the mean of its divisors is an integer number (261040).

2^1897497 is an apocalyptic number.

It is an amenable number.

1897497 is a deficient number, since it is larger than the sum of its proper divisors (1234983).

1897497 is a wasteful number, since it uses less digits than its factorization.

1897497 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30132 (or 30129 counting only the distinct ones).

The product of its digits is 127008, while the sum is 45.

The square root of 1897497 is about 1377.4966424641. The cubic root of 1897497 is about 123.8018209658.

The spelling of 1897497 in words is "one million, eight hundred ninety-seven thousand, four hundred ninety-seven".