1820385068 has 6 divisors (see below), whose sum is σ = 3185673876. Its totient is φ = 910192532.

The previous prime is 1820385067. The next prime is 1820385101. The reversal of 1820385068 is 8605830281.

It is not an unprimeable number, because it can be changed into a prime (1820385067) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 227548130 + ... + 227548137.

It is an arithmetic number, because the mean of its divisors is an integer number (530945646).

Almost surely, 2^1820385068 is an apocalyptic number.

It is an amenable number.

1820385068 is a deficient number, since it is larger than the sum of its proper divisors (1365288808).

1820385068 is a wasteful number, since it uses less digits than its factorization.

1820385068 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455096271 (or 455096269 counting only the distinct ones).

The product of its (nonzero) digits is 92160, while the sum is 41.

The square root of 1820385068 is about 42665.9708432845. The cubic root of 1820385068 is about 1221.0152500385.

The spelling of 1820385068 in words is "one billion, eight hundred twenty million, three hundred eighty-five thousand, sixty-eight".