538630785 has 144 divisors (see below), whose sum is σ = 1210023360. Its totient is φ = 219098880.

The previous prime is 538630777. The next prime is 538630801. The reversal of 538630785 is 587036835.

538630785 is a `hidden beast` number, since 5 + 3 + 8 + 630 + 7 + 8 + 5 = 666.

It is not a de Polignac number, because 538630785 - 2³ = 538630777 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 538630785.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 143 ways as a sum of consecutive naturals, for example, 1285306 + ... + 1285724.

It is an arithmetic number, because the mean of its divisors is an integer number (8402940).

Almost surely, 2^538630785 is an apocalyptic number.

538630785 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

It is an amenable number.

538630785 is an abundant number, since it is smaller than the sum of its proper divisors (671392575).

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

538630785 is a wasteful number, since it uses less digits than its factorization.

538630785 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 508 (or 498 counting only the distinct ones).

The product of its (nonzero) digits is 604800, while the sum is 45.

The square root of 538630785 is about 23208.4205623735. The cubic root of 538630785 is about 813.6364392346.

The spelling of 538630785 in words is "five hundred thirty-eight million, six hundred thirty thousand, seven hundred eighty-five".