2178052133 has 4 divisors (see below), whose sum is σ = 2178228780. Its totient is φ = 2177875488.

The previous prime is 2178052117. The next prime is 2178052141. The reversal of 2178052133 is 3312508712.

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 1522794529 + 655257604 = 39023^2 + 25598^2 .

It is a cyclic number.

It is not a de Polignac number, because 2178052133 - 2⁴ = 2178052117 is a prime.

It is a super-2 number, since 2×2178052133² = 9487822188131699378, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 2178052133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2178052193) 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, 68318 + ... + 94991.

It is an arithmetic number, because the mean of its divisors is an integer number (544557195).

Almost surely, 2^2178052133 is an apocalyptic number.

It is an amenable number.

2178052133 is a deficient number, since it is larger than the sum of its proper divisors (176647).

2178052133 is a wasteful number, since it uses less digits than its factorization.

2178052133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 176646.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 2178052133 is about 46669.6060943308. The cubic root of 2178052133 is about 1296.2519524648.

The spelling of 2178052133 in words is "two billion, one hundred seventy-eight million, fifty-two thousand, one hundred thirty-three".