100180813 has 4 divisors (see below), whose sum is σ = 106073820. Its totient is φ = 94287808.

The previous prime is 100180807. The next prime is 100180823. The reversal of 100180813 is 318081001.

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 40921609 + 59259204 = 6397^2 + 7698^2 .

It is a cyclic number.

It is not a de Polignac number, because 100180813 - 2¹³ = 100172621 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (100180823) 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, 2946478 + ... + 2946511.

It is an arithmetic number, because the mean of its divisors is an integer number (26518455).

Almost surely, 2^100180813 is an apocalyptic number.

It is an amenable number.

100180813 is a deficient number, since it is larger than the sum of its proper divisors (5893007).

100180813 is an equidigital number, since it uses as much as digits as its factorization.

100180813 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5893006.

The product of its (nonzero) digits is 192, while the sum is 22.

The square root of 100180813 is about 10009.0365670228. The cubic root of 100180813 is about 464.4384681210.

The spelling of 100180813 in words is "one hundred million, one hundred eighty thousand, eight hundred thirteen".