283782278538 has 48 divisors (see below), whose sum is σ = 675200290752. Its totient is φ = 85425120000.

The previous prime is 283782278513. The next prime is 283782278573. The reversal of 283782278538 is 835872287382.

It is a happy number.

283782278538 is a `hidden beast` number, since 2 + 8 + 3 + 7 + 8 + 22 + 78 + 538 = 666.

It is a super-2 number, since 2×283782278538² (a number of 24 digits) contains 22 as substring.

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 23 ways as a sum of consecutive naturals, for example, 4715943 + ... + 4775738.

It is an arithmetic number, because the mean of its divisors is an integer number (14066672724).

Almost surely, 2^283782278538 is an apocalyptic number.

283782278538 is an abundant number, since it is smaller than the sum of its proper divisors (391418012214).

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

283782278538 is a wasteful number, since it uses less digits than its factorization.

283782278538 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9491851 (or 9491848 counting only the distinct ones).

The product of its digits is 72253440, while the sum is 63.

The spelling of 283782278538 in words is "two hundred eighty-three billion, seven hundred eighty-two million, two hundred seventy-eight thousand, five hundred thirty-eight".