2198687854 has 24 divisors (see below), whose sum is σ = 3633469560. Its totient is φ = 997098960.

The previous prime is 2198687851. The next prime is 2198687857. The reversal of 2198687854 is 4587868912.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (2198687851) and next prime (2198687857).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2198687851) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 96952 + ... + 117460.

It is an arithmetic number, because the mean of its divisors is an integer number (151394565).

Almost surely, 2^2198687854 is an apocalyptic number.

2198687854 is a deficient number, since it is larger than the sum of its proper divisors (1434781706).

2198687854 is a wasteful number, since it uses less digits than its factorization.

2198687854 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 20976 (or 20965 counting only the distinct ones).

The product of its digits is 7741440, while the sum is 58.

The square root of 2198687854 is about 46890.1679886093. The cubic root of 2198687854 is about 1300.3328248424.

It can be divided in two parts, 219868 and 7854, that added together give a palindrome (227722).

The spelling of 2198687854 in words is "two billion, one hundred ninety-eight million, six hundred eighty-seven thousand, eight hundred fifty-four".