1804358749 has 2 divisors, whose sum is σ = 1804358750. Its totient is φ = 1804358748.

The previous prime is 1804358747. The next prime is 1804358783. The reversal of 1804358749 is 9478534081.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1693898649 + 110460100 = 41157^2 + 10510^2 .

It is a cyclic number.

It is not a de Polignac number, because 1804358749 - 2¹ = 1804358747 is a prime.

Together with 1804358747, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1804358741) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 902179374 + 902179375.

It is an arithmetic number, because the mean of its divisors is an integer number (902179375).

Almost surely, 2^1804358749 is an apocalyptic number.

It is an amenable number.

1804358749 is a deficient number, since it is larger than the sum of its proper divisors (1).

1804358749 is an equidigital number, since it uses as much as digits as its factorization.

1804358749 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 967680, while the sum is 49.

The square root of 1804358749 is about 42477.7441609133. The cubic root of 1804358749 is about 1217.4214888087.

The spelling of 1804358749 in words is "one billion, eight hundred four million, three hundred fifty-eight thousand, seven hundred forty-nine".