1848041989 has 2 divisors, whose sum is σ = 1848041990. Its totient is φ = 1848041988.

The previous prime is 1848041983. The next prime is 1848042041. The reversal of 1848041989 is 9891408481.

It is an a-pointer prime, because the next prime (1848042041) can be obtained adding 1848041989 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1802681764 + 45360225 = 42458^2 + 6735^2 .

It is an emirp because it is prime and its reverse (9891408481) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1848041989 - 2¹³ = 1848033797 is a prime.

It is a super-2 number, since 2×1848041989² = 6830518386214152242, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1848041983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 924020994 + 924020995.

It is an arithmetic number, because the mean of its divisors is an integer number (924020995).

Almost surely, 2^1848041989 is an apocalyptic number.

It is an amenable number.

1848041989 is a deficient number, since it is larger than the sum of its proper divisors (1).

1848041989 is an equidigital number, since it uses as much as digits as its factorization.

1848041989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 663552, while the sum is 52.

The square root of 1848041989 is about 42988.8588939041. The cubic root of 1848041989 is about 1227.1677820824.

The spelling of 1848041989 in words is "one billion, eight hundred forty-eight million, forty-one thousand, nine hundred eighty-nine".