1011111409 has 8 divisors (see below), whose sum is σ = 1260606528. Its totient is φ = 787878960.

The previous prime is 1011111377. The next prime is 1011111427. The reversal of 1011111409 is 9041111101.

It is a happy number.

1011111409 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 not a de Polignac number, because 1011111409 - 2⁵ = 1011111377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1011112409) 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, 6565582 + ... + 6565735.

It is an arithmetic number, because the mean of its divisors is an integer number (157575816).

Almost surely, 2^1011111409 is an apocalyptic number.

It is an amenable number.

1011111409 is a deficient number, since it is larger than the sum of its proper divisors (249495119).

1011111409 is a wasteful number, since it uses less digits than its factorization.

1011111409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13131335.

The product of its (nonzero) digits is 36, while the sum is 19.

The square root of 1011111409 is about 31797.9780646506. The cubic root of 1011111409 is about 1003.6901689034.

The spelling of 1011111409 in words is "one billion, eleven million, one hundred eleven thousand, four hundred nine".