1868427620 has 24 divisors (see below), whose sum is σ = 3924622464. Its totient is φ = 747194976.

The previous prime is 1868427607. The next prime is 1868427679. The reversal of 1868427620 is 267248681.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 106727 + ... + 122993.

It is an arithmetic number, because the mean of its divisors is an integer number (163525936).

Almost surely, 2^1868427620 is an apocalyptic number.

1868427620 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1868427620 is an abundant number, since it is smaller than the sum of its proper divisors (2056194844).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1868427620 is a wasteful number, since it uses less digits than its factorization.

1868427620 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22019 (or 22017 counting only the distinct ones).

The product of its (nonzero) digits is 258048, while the sum is 44.

The square root of 1868427620 is about 43225.3122602949. The cubic root of 1868427620 is about 1231.6635608351.

The spelling of 1868427620 in words is "one billion, eight hundred sixty-eight million, four hundred twenty-seven thousand, six hundred twenty".