1848700989 has 28 divisors (see below), whose sum is σ = 2934849276. Its totient is φ = 1159961472.

The previous prime is 1848700963. The next prime is 1848700991. The reversal of 1848700989 is 9890078481.

It can be written as a sum of positive squares in 2 ways, for example, as 1577440089 + 271260900 = 39717^2 + 16470^2 .

It is not a de Polignac number, because 1848700989 - 2¹⁷ = 1848569917 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1848700949) by changing a digit.

It is a polite number, since it can be written in 27 ways as a sum of consecutive naturals, for example, 62194 + ... + 86979.

Almost surely, 2^1848700989 is an apocalyptic number.

It is an amenable number.

1848700989 is a deficient number, since it is larger than the sum of its proper divisors (1086148287).

1848700989 is an equidigital number, since it uses as much as digits as its factorization.

1848700989 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 149208 (or 149193 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 1848700989 is about 42996.5229873300. The cubic root of 1848700989 is about 1227.3136314852.

The spelling of 1848700989 in words is "one billion, eight hundred forty-eight million, seven hundred thousand, nine hundred eighty-nine".