1013665326 has 16 divisors (see below), whose sum is σ = 2048232144. Its totient is φ = 334404864.

The previous prime is 1013665321. The next prime is 1013665337. The reversal of 1013665326 is 6235663101.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013665321) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 870265 + ... + 871428.

It is an arithmetic number, because the mean of its divisors is an integer number (128014509).

Almost surely, 2^1013665326 is an apocalyptic number.

1013665326 is an abundant number, since it is smaller than the sum of its proper divisors (1034566818).

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

1013665326 is a wasteful number, since it uses less digits than its factorization.

1013665326 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1741795.

The product of its (nonzero) digits is 19440, while the sum is 33.

The square root of 1013665326 is about 31838.1112191034. Note that the first 3 decimals coincide. The cubic root of 1013665326 is about 1004.5345157542.

The spelling of 1013665326 in words is "one billion, thirteen million, six hundred sixty-five thousand, three hundred twenty-six".