1849397 has 4 divisors (see below), whose sum is σ = 2017536. Its totient is φ = 1681260.

The previous prime is 1849391. The next prime is 1849399. The reversal of 1849397 is 7939481.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 1849397 - 2⁴ = 1849381 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1849391) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 84053 + ... + 84074.

It is an arithmetic number, because the mean of its divisors is an integer number (504384).

2^1849397 is an apocalyptic number.

It is an amenable number.

1849397 is a deficient number, since it is larger than the sum of its proper divisors (168139).

1849397 is a wasteful number, since it uses less digits than its factorization.

1849397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 168138.

The product of its digits is 54432, while the sum is 41.

The square root of 1849397 is about 1359.9253655992. The cubic root of 1849397 is about 122.7467634506.

The spelling of 1849397 in words is "one million, eight hundred forty-nine thousand, three hundred ninety-seven".