1020949009 has 8 divisors (see below), whose sum is σ = 1071161600. Its totient is φ = 971816400.

The previous prime is 1020948979. The next prime is 1020949037. The reversal of 1020949009 is 9009490201.

1020949009 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 1020949009 - 2⁵ = 1020948977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1020949049) 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, 268059 + ... + 271840.

It is an arithmetic number, because the mean of its divisors is an integer number (133895200).

Almost surely, 2^1020949009 is an apocalyptic number.

It is an amenable number.

1020949009 is a deficient number, since it is larger than the sum of its proper divisors (50212591).

1020949009 is an equidigital number, since it uses as much as digits as its factorization.

1020949009 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 539991.

The product of its (nonzero) digits is 5832, while the sum is 34.

The square root of 1020949009 is about 31952.2927033413. The cubic root of 1020949009 is about 1006.9348003755.

The spelling of 1020949009 in words is "one billion, twenty million, nine hundred forty-nine thousand, nine".