1831061 has 4 divisors (see below), whose sum is σ = 1843500. Its totient is φ = 1818624.

The previous prime is 1831051. The next prime is 1831079. The reversal of 1831061 is 1601381.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 819025 + 1012036 = 905^2 + 1006^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1831061 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1831001) 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, 5996 + ... + 6293.

It is an arithmetic number, because the mean of its divisors is an integer number (460875).

2^1831061 is an apocalyptic number.

It is an amenable number.

1831061 is a deficient number, since it is larger than the sum of its proper divisors (12439).

1831061 is a wasteful number, since it uses less digits than its factorization.

1831061 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12438.

The product of its (nonzero) digits is 144, while the sum is 20.

The square root of 1831061 is about 1353.1670259063. The cubic root of 1831061 is about 122.3397543736.

The spelling of 1831061 in words is "one million, eight hundred thirty-one thousand, sixty-one".