100994933209 has 3 divisors (see below), whose sum is σ = 100995251007. Its totient is φ = 100994615412.

The previous prime is 100994933203. The next prime is 100994933227. The reversal of 100994933209 is 902339499001.

The square root of 100994933209 is 317797.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 21003255625 + 79991677584 = 144925^2 + 282828^2 .

It is not a de Polignac number, because 100994933209 - 2⁵ = 100994933177 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (100994933203) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 158899 + ... + 476695.

It is an arithmetic number, because the mean of its divisors is an integer number (33665083669).

Almost surely, 2^100994933209 is an apocalyptic number.

100994933209 is the 317797-th square number.

100994933209 is the 158899-th centered octagonal number.

It is an amenable number.

100994933209 is a deficient number, since it is larger than the sum of its proper divisors (317798).

100994933209 is an frugal number, since it uses more digits than its factorization.

100994933209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 635594 (or 317797 counting only the distinct ones).

The product of its (nonzero) digits is 472392, while the sum is 49.

Multiplying 100994933209 by its sum of digits (49), we get a square (4948751727241 = 2224579²).

The spelling of 100994933209 in words is "one hundred billion, nine hundred ninety-four million, nine hundred thirty-three thousand, two hundred nine".