1848631797 has 18 divisors (see below), whose sum is σ = 2680921698. Its totient is φ = 1227513312.

The previous prime is 1848631781. The next prime is 1848631801. The reversal of 1848631797 is 7971368481.

It can be written as a sum of positive squares in 3 ways, for example, as 150038001 + 1698593796 = 12249^2 + 41214^2 .

It is not a de Polignac number, because 1848631797 - 2⁴ = 1848631781 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1848631097) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 689223 + ... + 691899.

Almost surely, 2^1848631797 is an apocalyptic number.

It is an amenable number.

1848631797 is a deficient number, since it is larger than the sum of its proper divisors (832289901).

1848631797 is an equidigital number, since it uses as much as digits as its factorization.

1848631797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3237 (or 2957 counting only the distinct ones).

The product of its digits is 2032128, while the sum is 54.

The square root of 1848631797 is about 42995.7183565992. The cubic root of 1848631797 is about 1227.2983195905.

The spelling of 1848631797 in words is "one billion, eight hundred forty-eight million, six hundred thirty-one thousand, seven hundred ninety-seven".