901920117889 has 8 divisors (see below), whose sum is σ = 1034408133440. Its totient is φ = 770342673456.

The previous prime is 901920117871. The next prime is 901920117907. The reversal of 901920117889 is 988711029109.

It is an interprime number because it is at equal distance from previous prime (901920117871) and next prime (901920117907).

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 901920117889 - 2¹¹ = 901920115841 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (901920117869) 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, 227640654 + ... + 227644615.

It is an arithmetic number, because the mean of its divisors is an integer number (129301016680).

Almost surely, 2^901920117889 is an apocalyptic number.

It is an amenable number.

901920117889 is a deficient number, since it is larger than the sum of its proper divisors (132488015551).

901920117889 is a wasteful number, since it uses less digits than its factorization.

901920117889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 455285559.

The product of its (nonzero) digits is 653184, while the sum is 55.

The spelling of 901920117889 in words is "nine hundred one billion, nine hundred twenty million, one hundred seventeen thousand, eight hundred eighty-nine".