1843651049 has 2 divisors, whose sum is σ = 1843651050. Its totient is φ = 1843651048.

The previous prime is 1843651027. The next prime is 1843651063. The reversal of 1843651049 is 9401563481.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1839809449 + 3841600 = 42893^2 + 1960^2 .

It is a cyclic number.

It is not a de Polignac number, because 1843651049 - 2²⁴ = 1826873833 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 1843650997 and 1843651015.

It is not a weakly prime, because it can be changed into another prime (1843651099) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 921825524 + 921825525.

It is an arithmetic number, because the mean of its divisors is an integer number (921825525).

Almost surely, 2^1843651049 is an apocalyptic number.

It is an amenable number.

1843651049 is a deficient number, since it is larger than the sum of its proper divisors (1).

1843651049 is an equidigital number, since it uses as much as digits as its factorization.

1843651049 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 103680, while the sum is 41.

The square root of 1843651049 is about 42937.7578478430. The cubic root of 1843651049 is about 1226.1950961448.

The spelling of 1843651049 in words is "one billion, eight hundred forty-three million, six hundred fifty-one thousand, forty-nine".