100918191001 has 4 divisors (see below), whose sum is σ = 101242687104. Its totient is φ = 100593694900.

The previous prime is 100918190993. The next prime is 100918191037. The reversal of 100918191001 is 100191819001.

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, and also an emirpimes, since its reverse is a distinct semiprime: 100191819001 = 1657 ⋅60465793.

It is a cyclic number.

It is not a de Polignac number, because 100918191001 - 2³ = 100918190993 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100918191061) 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, 162247585 + ... + 162248206.

It is an arithmetic number, because the mean of its divisors is an integer number (25310671776).

Almost surely, 2^100918191001 is an apocalyptic number.

It is an amenable number.

100918191001 is a deficient number, since it is larger than the sum of its proper divisors (324496103).

100918191001 is an equidigital number, since it uses as much as digits as its factorization.

100918191001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 324496102.

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

The spelling of 100918191001 in words is "one hundred billion, nine hundred eighteen million, one hundred ninety-one thousand, one".