2168867201 has 4 divisors (see below), whose sum is σ = 2170206804. Its totient is φ = 2167527600.

The previous prime is 2168867149. The next prime is 2168867203. The reversal of 2168867201 is 1027688612.

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 1814674801 + 354192400 = 42599^2 + 18820^2 .

It is a cyclic number.

It is not a de Polignac number, because 2168867201 - 2⁶ = 2168867137 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2168867203) 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, 667370 + ... + 670611.

It is an arithmetic number, because the mean of its divisors is an integer number (542551701).

Almost surely, 2^2168867201 is an apocalyptic number.

It is an amenable number.

2168867201 is a deficient number, since it is larger than the sum of its proper divisors (1339603).

2168867201 is a wasteful number, since it uses less digits than its factorization.

2168867201 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1339602.

The product of its (nonzero) digits is 64512, while the sum is 41.

The square root of 2168867201 is about 46571.0983443595. The cubic root of 2168867201 is about 1294.4272698839.

The spelling of 2168867201 in words is "two billion, one hundred sixty-eight million, eight hundred sixty-seven thousand, two hundred one".