1831797 has 12 divisors (see below), whose sum is σ = 2886624. Its totient is φ = 1110120.

The previous prime is 1831787. The next prime is 1831799. The reversal of 1831797 is 7971381.

It is a de Polignac number, because none of the positive numbers 2^k-1831797 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831799) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 9153 + ... + 9350.

It is an arithmetic number, because the mean of its divisors is an integer number (240552).

2^1831797 is an apocalyptic number.

It is an amenable number.

1831797 is a deficient number, since it is larger than the sum of its proper divisors (1054827).

1831797 is a wasteful number, since it uses less digits than its factorization.

1831797 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18520 (or 18517 counting only the distinct ones).

The product of its digits is 10584, while the sum is 36.

The square root of 1831797 is about 1353.4389531856. The cubic root of 1831797 is about 122.3561437780.

It can be divided in two parts, 1831 and 797, that added together give a triangular number (2628 = T₇₂).

The spelling of 1831797 in words is "one million, eight hundred thirty-one thousand, seven hundred ninety-seven".