383506146820 has 24 divisors (see below), whose sum is σ = 805864135104. Its totient is φ = 153306986976.

The previous prime is 383506146787. The next prime is 383506146823. The reversal of 383506146820 is 28641605383.

It is a super-2 number, since 2×383506146820² (a number of 24 digits) contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (383506146823) by changing a digit.

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, 5934042 + ... + 5998321.

It is an arithmetic number, because the mean of its divisors is an integer number (33577672296).

Almost surely, 2^383506146820 is an apocalyptic number.

It is an amenable number.

383506146820 is an abundant number, since it is smaller than the sum of its proper divisors (422357988284).

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

383506146820 is a wasteful number, since it uses less digits than its factorization.

383506146820 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11933979 (or 11933977 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 46.

The spelling of 383506146820 in words is "three hundred eighty-three billion, five hundred six million, one hundred forty-six thousand, eight hundred twenty".