1841531 has 2 divisors, whose sum is σ = 1841532. Its totient is φ = 1841530.

The previous prime is 1841519. The next prime is 1841557. The reversal of 1841531 is 1351481.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1841531 is a prime.

It is a super-2 number, since 2×1841531² = 6782472847922, which contains 22 as substring.

It is a Chen prime.

It is an Ulam number.

It is a junction number, because it is equal to n+sod(n) for n = 1841497 and 1841506.

It is not a weakly prime, because it can be changed into another prime (1801531) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920765 + 920766.

It is an arithmetic number, because the mean of its divisors is an integer number (920766).

2^1841531 is an apocalyptic number.

1841531 is a deficient number, since it is larger than the sum of its proper divisors (1).

1841531 is an equidigital number, since it uses as much as digits as its factorization.

1841531 is an evil number, because the sum of its binary digits is even.

The product of its digits is 480, while the sum is 23.

The square root of 1841531 is about 1357.0302133704. The cubic root of 1841531 is about 122.5724907608.

The spelling of 1841531 in words is "one million, eight hundred forty-one thousand, five hundred thirty-one".