100818001 has 4 divisors (see below), whose sum is σ = 100838452. Its totient is φ = 100797552.

The previous prime is 100817963. The next prime is 100818089.

100818001 is nontrivially palindromic in base 10.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 12006225 + 88811776 = 3465^2 + 9424^2 .

It is a cyclic number.

It is not a de Polignac number, because 100818001 - 2¹³ = 100809809 is a prime.

100818001 is a strobogrammatic number because it is the same when read upside-down.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 100818001.

It is not an unprimeable number, because it can be changed into a prime (100819001) 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, 2215 + ... + 14371.

It is an arithmetic number, because the mean of its divisors is an integer number (25209613).

Almost surely, 2^100818001 is an apocalyptic number.

It is an amenable number.

100818001 is a deficient number, since it is larger than the sum of its proper divisors (20451).

100818001 is an equidigital number, since it uses as much as digits as its factorization.

100818001 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20450.

The product of its (nonzero) digits is 64, while the sum is 19.

The square root of 100818001 is about 10040.8167496474. The cubic root of 100818001 is about 465.4210561655.

The spelling of 100818001 in words is "one hundred million, eight hundred eighteen thousand, one".