1840049 has 2 divisors, whose sum is σ = 1840050. Its totient is φ = 1840048.

The previous prime is 1840043. The next prime is 1840051. The reversal of 1840049 is 9400481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1488400 + 351649 = 1220^2 + 593^2 .

It is an emirp because it is prime and its reverse (9400481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1840049 - 2²⁰ = 791473 is a prime.

Together with 1840051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (1840043) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 920024 + 920025.

It is an arithmetic number, because the mean of its divisors is an integer number (920025).

2^1840049 is an apocalyptic number.

It is an amenable number.

1840049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1840049 is an equidigital number, since it uses as much as digits as its factorization.

1840049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1152, while the sum is 26.

The square root of 1840049 is about 1356.4840581444. The cubic root of 1840049 is about 122.5396012462.

The spelling of 1840049 in words is "one million, eight hundred forty thousand, forty-nine".