1840727668 has 24 divisors (see below), whose sum is σ = 3470779368. Its totient is φ = 849146496.

The previous prime is 1840727639. The next prime is 1840727687. The reversal of 1840727668 is 8667270481.

It is a happy number.

It can be written as a sum of positive squares in 4 ways, for example, as 242487184 + 1598240484 = 15572^2 + 39978^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 113730 + ... + 128902.

It is an arithmetic number, because the mean of its divisors is an integer number (144615807).

Almost surely, 2^1840727668 is an apocalyptic number.

It is an amenable number.

1840727668 is a deficient number, since it is larger than the sum of its proper divisors (1630051700).

1840727668 is a wasteful number, since it uses less digits than its factorization.

1840727668 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17523 (or 17521 counting only the distinct ones).

The product of its (nonzero) digits is 903168, while the sum is 49.

The square root of 1840727668 is about 42903.7022644899. The cubic root of 1840727668 is about 1225.5466488197.

The spelling of 1840727668 in words is "one billion, eight hundred forty million, seven hundred twenty-seven thousand, six hundred sixty-eight".