2791987201 has 4 divisors (see below), whose sum is σ = 2851391232. Its totient is φ = 2732583172.

The previous prime is 2791987199. The next prime is 2791987213. The reversal of 2791987201 is 1027891972.

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.

It is a cyclic number.

It is not a de Polignac number, because 2791987201 - 2¹ = 2791987199 is a prime.

It is a super-3 number, since 3×2791987201³ (a number of 29 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2791987001) 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, 29701945 + ... + 29702038.

It is an arithmetic number, because the mean of its divisors is an integer number (712847808).

Almost surely, 2^2791987201 is an apocalyptic number.

It is an amenable number.

2791987201 is a deficient number, since it is larger than the sum of its proper divisors (59404031).

2791987201 is an equidigital number, since it uses as much as digits as its factorization.

2791987201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 59404030.

The product of its (nonzero) digits is 127008, while the sum is 46.

The square root of 2791987201 is about 52839.2581420292. The cubic root of 2791987201 is about 1408.1139716586.

The spelling of 2791987201 in words is "two billion, seven hundred ninety-one million, nine hundred eighty-seven thousand, two hundred one".