919190919091 has 8 divisors (see below), whose sum is σ = 924315015168. Its totient is φ = 914070069000.

The previous prime is 919190919061. The next prime is 919190919107. The reversal of 919190919091 is 190919091919.

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 919190919091 - 2⁷ = 919190918963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (919190919061) 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, 242455 + ... + 1377376.

It is an arithmetic number, because the mean of its divisors is an integer number (115539376896).

Almost surely, 2^919190919091 is an apocalyptic number.

919190919091 is a deficient number, since it is larger than the sum of its proper divisors (5124096077).

919190919091 is a wasteful number, since it uses less digits than its factorization.

919190919091 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1622993.

The product of its (nonzero) digits is 531441, while the sum is 58.

The spelling of 919190919091 in words is "nine hundred nineteen billion, one hundred ninety million, nine hundred nineteen thousand, ninety-one".