2198777853 has 4 divisors (see below), whose sum is σ = 2931703808. Its totient is φ = 1465851900.

The previous prime is 2198777813. The next prime is 2198777857. The reversal of 2198777853 is 3587778912.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 2198777853 - 2⁸ = 2198777597 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 2198777793 and 2198777802.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198777857) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 366462973 + ... + 366462978.

It is an arithmetic number, because the mean of its divisors is an integer number (732925952).

Almost surely, 2^2198777853 is an apocalyptic number.

It is an amenable number.

2198777853 is a deficient number, since it is larger than the sum of its proper divisors (732925955).

2198777853 is an equidigital number, since it uses as much as digits as its factorization.

2198777853 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 732925954.

The product of its digits is 5927040, while the sum is 57.

The square root of 2198777853 is about 46891.1276575857. The cubic root of 2198777853 is about 1300.3505667965.

The spelling of 2198777853 in words is "two billion, one hundred ninety-eight million, seven hundred seventy-seven thousand, eight hundred fifty-three".