1897396 has 12 divisors (see below), whose sum is σ = 3332448. Its totient is φ = 945272.

The previous prime is 1897367. The next prime is 1897403. The reversal of 1897396 is 6937981.

It is a super-2 number, since 2×1897396² = 7200223161632, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

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 in 3 ways as a sum of consecutive naturals, for example, 705 + ... + 2071.

It is an arithmetic number, because the mean of its divisors is an integer number (277704).

2^1897396 is an apocalyptic number.

It is an amenable number.

1897396 is a deficient number, since it is larger than the sum of its proper divisors (1435052).

1897396 is a wasteful number, since it uses less digits than its factorization.

1897396 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718 (or 1716 counting only the distinct ones).

The product of its digits is 81648, while the sum is 43.

The square root of 1897396 is about 1377.4599812699. The cubic root of 1897396 is about 123.7996243517.

It can be divided in two parts, 18 and 97396, that multiplied together give a triangular number (1753128 = T₁₈₇₂).

The spelling of 1897396 in words is "one million, eight hundred ninety-seven thousand, three hundred ninety-six".