9109819901 has 8 divisors (see below), whose sum is σ = 11212086144. Its totient is φ = 7207769520.

The previous prime is 9109819877. The next prime is 9109819963. The reversal of 9109819901 is 1099189019.

It is a happy number.

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

It is not a de Polignac number, because 9109819901 - 2¹⁸ = 9109557757 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9109810901) 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, 50053865 + ... + 50054046.

It is an arithmetic number, because the mean of its divisors is an integer number (1401510768).

Almost surely, 2^9109819901 is an apocalyptic number.

9109819901 is a gapful number since it is divisible by the number (91) formed by its first and last digit.

It is an amenable number.

9109819901 is a deficient number, since it is larger than the sum of its proper divisors (2102266243).

9109819901 is a wasteful number, since it uses less digits than its factorization.

9109819901 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 100107931.

The product of its (nonzero) digits is 52488, while the sum is 47.

The square root of 9109819901 is about 95445.3765302437. The cubic root of 9109819901 is about 2088.5101827411.

The spelling of 9109819901 in words is "nine billion, one hundred nine million, eight hundred nineteen thousand, nine hundred one".