1000135646 has 8 divisors (see below), whose sum is σ = 1505620200. Its totient is φ = 498262248.

The previous prime is 1000135639. The next prime is 1000135649. The reversal of 1000135646 is 6465310001.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1000135649) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 902096 + ... + 903203.

It is an arithmetic number, because the mean of its divisors is an integer number (188202525).

Almost surely, 2^1000135646 is an apocalyptic number.

1000135646 is a deficient number, since it is larger than the sum of its proper divisors (505484554).

1000135646 is a wasteful number, since it uses less digits than its factorization.

1000135646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1805578.

The product of its (nonzero) digits is 2160, while the sum is 26.

The square root of 1000135646 is about 31624.9212805344. The cubic root of 1000135646 is about 1000.0452132891.

Adding to 1000135646 its reverse (6465310001), we get a palindrome (7465445647).

The spelling of 1000135646 in words is "one billion, one hundred thirty-five thousand, six hundred forty-six".