1000165656 has 48 divisors (see below), whose sum is σ = 2908648440. Its totient is φ = 285761280.

The previous prime is 1000165631. The next prime is 1000165657. The reversal of 1000165656 is 6565610001.

1000165656 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000165657) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 424065 + ... + 426416.

Almost surely, 2^1000165656 is an apocalyptic number.

It is an amenable number.

1000165656 is an abundant number, since it is smaller than the sum of its proper divisors (1908482784).

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

1000165656 is a wasteful number, since it uses less digits than its factorization.

1000165656 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 850504 (or 850493 counting only the distinct ones).

The product of its (nonzero) digits is 5400, while the sum is 30.

The square root of 1000165656 is about 31625.3957445595. The cubic root of 1000165656 is about 1000.0552156178.

Adding to 1000165656 its reverse (6565610001), we get a palindrome (7565775657).

It can be divided in two parts, 10001 and 65656, that added together give a palindrome (75657).

The spelling of 1000165656 in words is "one billion, one hundred sixty-five thousand, six hundred fifty-six".