9081900111001 has 4 divisors (see below), whose sum is σ = 9082800121104. Its totient is φ = 9081000100900.

The previous prime is 9081900110971. The next prime is 9081900111047. The reversal of 9081900111001 is 1001110091809.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 9081900111001 - 2⁹ = 9081900110489 is a prime.

It is a super-2 number, since 2×9081900111001² (a number of 27 digits) contains 22 as substring.

It is a Duffinian number.

9081900111001 is a modest number, since divided by 111001 gives 90819 as remainder.

It is not an unprimeable number, because it can be changed into a prime (9081900111901) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 449989915 + ... + 450010096.

It is an arithmetic number, because the mean of its divisors is an integer number (2270700030276).

Almost surely, 2^{9081900111001} is an apocalyptic number.

It is an amenable number.

9081900111001 is a deficient number, since it is larger than the sum of its proper divisors (900010103).

9081900111001 is a wasteful number, since it uses less digits than its factorization.

9081900111001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 900010102.

The product of its (nonzero) digits is 648, while the sum is 31.

The spelling of 9081900111001 in words is "nine trillion, eighty-one billion, nine hundred million, one hundred eleven thousand, one".