918191010001 has 4 divisors (see below), whose sum is σ = 918221128372. Its totient is φ = 918160891632.

The previous prime is 918191009933. The next prime is 918191010047. The reversal of 918191010001 is 100010191819.

918191010001 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 100010191819 = 101 ⋅990199919.

It can be written as a sum of positive squares in 2 ways, for example, as 14208401601 + 903982608400 = 119199^2 + 950780^2 .

It is a cyclic number.

It is not a de Polignac number, because 918191010001 - 2¹⁷ = 918190878929 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (918191010301) 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, 15013410 + ... + 15074443.

It is an arithmetic number, because the mean of its divisors is an integer number (229555282093).

Almost surely, 2^918191010001 is an apocalyptic number.

It is an amenable number.

918191010001 is a deficient number, since it is larger than the sum of its proper divisors (30118371).

918191010001 is a wasteful number, since it uses less digits than its factorization.

918191010001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 30118370.

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

The spelling of 918191010001 in words is "nine hundred eighteen billion, one hundred ninety-one million, ten thousand, one".