2781133201 has 16 divisors (see below), whose sum is σ = 3468544128. Its totient is φ = 2166393600.

The previous prime is 2781133177. The next prime is 2781133211. The reversal of 2781133201 is 1023311872.

It is not a de Polignac number, because 2781133201 - 2⁵ = 2781133169 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 2781133201.

It is not an unprimeable number, because it can be changed into a prime (2781133211) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 425881 + ... + 432361.

It is an arithmetic number, because the mean of its divisors is an integer number (216784008).

Almost surely, 2^2781133201 is an apocalyptic number.

It is an amenable number.

2781133201 is a deficient number, since it is larger than the sum of its proper divisors (687410927).

2781133201 is a wasteful number, since it uses less digits than its factorization.

2781133201 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12072.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 2781133201 is about 52736.4504019753. The cubic root of 2781133201 is about 1406.2868957931.

The spelling of 2781133201 in words is "two billion, seven hundred eighty-one million, one hundred thirty-three thousand, two hundred one".