1785705252 has 12 divisors (see below), whose sum is σ = 4166645616. Its totient is φ = 595235080.

The previous prime is 1785705241. The next prime is 1785705323. The reversal of 1785705252 is 2525075871.

It is a tau number, because it is divible by the number of its divisors (12).

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 74404374 + ... + 74404397.

It is an arithmetic number, because the mean of its divisors is an integer number (347220468).

Almost surely, 2^1785705252 is an apocalyptic number.

1785705252 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1785705252 is an abundant number, since it is smaller than the sum of its proper divisors (2380940364).

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

1785705252 is a wasteful number, since it uses less digits than its factorization.

1785705252 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 148808778 (or 148808776 counting only the distinct ones).

The product of its (nonzero) digits is 196000, while the sum is 42.

The square root of 1785705252 is about 42257.6058479417. The cubic root of 1785705252 is about 1213.2117057636.

The spelling of 1785705252 in words is "one billion, seven hundred eighty-five million, seven hundred five thousand, two hundred fifty-two".