2898778868191 has 2 divisors, whose sum is σ = 2898778868192. Its totient is φ = 2898778868190.

The previous prime is 2898778868129. The next prime is 2898778868263. The reversal of 2898778868191 is 1918688778982.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 2898778868191 - 2²⁹ = 2898241997279 is a prime.

It is a super-2 number, since 2×2898778868191² (a number of 26 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2898778868291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1449389434095 + 1449389434096.

It is an arithmetic number, because the mean of its divisors is an integer number (1449389434096).

Almost surely, 2^{2898778868191} is an apocalyptic number.

2898778868191 is a deficient number, since it is larger than the sum of its proper divisors (1).

2898778868191 is an equidigital number, since it uses as much as digits as its factorization.

2898778868191 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1560674304, while the sum is 82.

The spelling of 2898778868191 in words is "two trillion, eight hundred ninety-eight billion, seven hundred seventy-eight million, eight hundred sixty-eight thousand, one hundred ninety-one".