1020013646 has 16 divisors (see below), whose sum is σ = 1612984320. Its totient is φ = 483052440.

The previous prime is 1020013639. The next prime is 1020013649. The reversal of 1020013646 is 6463100201.

It is a happy number.

1020013646 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 (1020013649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 172106 + ... + 177933.

It is an arithmetic number, because the mean of its divisors is an integer number (100811520).

Almost surely, 2^1020013646 is an apocalyptic number.

1020013646 is a deficient number, since it is larger than the sum of its proper divisors (592970674).

1020013646 is a wasteful number, since it uses less digits than its factorization.

1020013646 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 350119.

The product of its (nonzero) digits is 864, while the sum is 23.

The square root of 1020013646 is about 31937.6524810450. The cubic root of 1020013646 is about 1006.6271985510.

Adding to 1020013646 its reverse (6463100201), we get a palindrome (7483113847).

The spelling of 1020013646 in words is "one billion, twenty million, thirteen thousand, six hundred forty-six".