1013040621 has 16 divisors (see below), whose sum is σ = 1519801600. Its totient is φ = 666810144.

The previous prime is 1013040619. The next prime is 1013040629. The reversal of 1013040621 is 1260403101.

It is a happy number.

1013040621 is a `hidden beast` number, since 1 + 0 + 1 + 3 + 0 + 40 + 621 = 666.

It is not a de Polignac number, because 1013040621 - 2¹ = 1013040619 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1013040594 and 1013040603.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1013040629) 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 15 ways as a sum of consecutive naturals, for example, 235336 + ... + 239601.

It is an arithmetic number, because the mean of its divisors is an integer number (94987600).

Almost surely, 2^1013040621 is an apocalyptic number.

It is an amenable number.

1013040621 is a deficient number, since it is larger than the sum of its proper divisors (506760979).

1013040621 is an equidigital number, since it uses as much as digits as its factorization.

1013040621 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 475025 (or 475019 counting only the distinct ones).

The product of its (nonzero) digits is 144, while the sum is 18.

The square root of 1013040621 is about 31828.2990591706. The cubic root of 1013040621 is about 1004.3281140697.

Adding to 1013040621 its reverse (1260403101), we get a palindrome (2273443722).

The spelling of 1013040621 in words is "one billion, thirteen million, forty thousand, six hundred twenty-one".