10019090909 has 8 divisors (see below), whose sum is σ = 10337755008. Its totient is φ = 9704822400.

The previous prime is 10019090891. The next prime is 10019090923. The reversal of 10019090909 is 90909091001.

It is a happy number.

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 10019090909 - 2¹² = 10019086813 is a prime.

It is a Duffinian number.

10019090909 is a modest number, since divided by 90909 gives 10019 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (10019096909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1094267 + ... + 1103384.

It is an arithmetic number, because the mean of its divisors is an integer number (1292219376).

Almost surely, 2^10019090909 is an apocalyptic number.

It is an amenable number.

10019090909 is a deficient number, since it is larger than the sum of its proper divisors (318664099).

10019090909 is an equidigital number, since it uses as much as digits as its factorization.

10019090909 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2197795.

The product of its (nonzero) digits is 6561, while the sum is 38.

It can be divided in two parts, 1001 and 9090909, that multiplied together give a palindrome (9099999909).

The spelling of 10019090909 in words is "ten billion, nineteen million, ninety thousand, nine hundred nine".