1897534 has 4 divisors (see below), whose sum is σ = 2846304. Its totient is φ = 948766.

The previous prime is 1897529. The next prime is 1897537. The reversal of 1897534 is 4357981.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 4357981 = 47 ⋅92723.

It is a junction number, because it is equal to n+sod(n) for n = 1897493 and 1897502.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1897537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 474382 + ... + 474385.

It is an arithmetic number, because the mean of its divisors is an integer number (711576).

2^1897534 is an apocalyptic number.

1897534 is a deficient number, since it is larger than the sum of its proper divisors (948770).

1897534 is an equidigital number, since it uses as much as digits as its factorization.

1897534 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 948769.

The product of its digits is 30240, while the sum is 37.

The square root of 1897534 is about 1377.5100725585. The cubic root of 1897534 is about 123.8026256465.

The spelling of 1897534 in words is "one million, eight hundred ninety-seven thousand, five hundred thirty-four".