2072901209 has 8 divisors (see below), whose sum is σ = 2130319368. Its totient is φ = 2015556480.

The previous prime is 2072901199. The next prime is 2072901217. The reversal of 2072901209 is 9021092702.

It can be written as a sum of positive squares in 4 ways, for example, as 788037184 + 1284864025 = 28072^2 + 35845^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 2072901209 - 2⁸ = 2072900953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2072901269) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41549 + ... + 76629.

It is an arithmetic number, because the mean of its divisors is an integer number (266289921).

Almost surely, 2^2072901209 is an apocalyptic number.

It is an amenable number.

2072901209 is a deficient number, since it is larger than the sum of its proper divisors (57418159).

2072901209 is a wasteful number, since it uses less digits than its factorization.

2072901209 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 36715.

The product of its (nonzero) digits is 4536, while the sum is 32.

The square root of 2072901209 is about 45529.1248433352. The cubic root of 2072901209 is about 1275.0470230511.

The spelling of 2072901209 in words is "two billion, seventy-two million, nine hundred one thousand, two hundred nine".