1840185241 has 4 divisors (see below), whose sum is σ = 1865393332. Its totient is φ = 1814977152.

The previous prime is 1840185229. The next prime is 1840185253. The reversal of 1840185241 is 1425810481.

It is a happy number.

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

It is an interprime number because it is at equal distance from previous prime (1840185229) and next prime (1840185253).

It can be written as a sum of positive squares in 2 ways, for example, as 992502016 + 847683225 = 31504^2 + 29115^2 .

It is a cyclic number.

It is not a de Polignac number, because 1840185241 - 2⁹ = 1840184729 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1840185197 and 1840185206.

It is not an unprimeable number, because it can be changed into a prime (1840185341) 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, 12603936 + ... + 12604081.

It is an arithmetic number, because the mean of its divisors is an integer number (466348333).

Almost surely, 2^1840185241 is an apocalyptic number.

It is an amenable number.

1840185241 is a deficient number, since it is larger than the sum of its proper divisors (25208091).

1840185241 is an equidigital number, since it uses as much as digits as its factorization.

1840185241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 25208090.

The product of its (nonzero) digits is 10240, while the sum is 34.

The square root of 1840185241 is about 42897.3803512522. The cubic root of 1840185241 is about 1225.4262553266.

The spelling of 1840185241 in words is "one billion, eight hundred forty million, one hundred eighty-five thousand, two hundred forty-one".