2801816867 has 4 divisors (see below), whose sum is σ = 2812979736. Its totient is φ = 2790654000.

The previous prime is 2801816851. The next prime is 2801816881. The reversal of 2801816867 is 7686181082.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7686181082 = 2 ⋅3843090541.

It is a cyclic number.

It is not a de Polignac number, because 2801816867 - 2⁴ = 2801816851 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (2801816167) 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, 5581058 + ... + 5581559.

It is an arithmetic number, because the mean of its divisors is an integer number (703244934).

Almost surely, 2^2801816867 is an apocalyptic number.

2801816867 is a deficient number, since it is larger than the sum of its proper divisors (11162869).

2801816867 is a wasteful number, since it uses less digits than its factorization.

2801816867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 11162868.

The product of its (nonzero) digits is 258048, while the sum is 47.

The square root of 2801816867 is about 52932.1912166878. The cubic root of 2801816867 is about 1409.7645377482.

The spelling of 2801816867 in words is "two billion, eight hundred one million, eight hundred sixteen thousand, eight hundred sixty-seven".