2198446687 has 2 divisors, whose sum is σ = 2198446688. Its totient is φ = 2198446686.

The previous prime is 2198446673. The next prime is 2198446693. The reversal of 2198446687 is 7866448912.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2198446687 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2198446637) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1099223343 + 1099223344.

It is an arithmetic number, because the mean of its divisors is an integer number (1099223344).

Almost surely, 2^2198446687 is an apocalyptic number.

2198446687 is a deficient number, since it is larger than the sum of its proper divisors (1).

2198446687 is an equidigital number, since it uses as much as digits as its factorization.

2198446687 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4644864, while the sum is 55.

The square root of 2198446687 is about 46887.5963022205. The cubic root of 2198446687 is about 1300.2852799954.

The spelling of 2198446687 in words is "two billion, one hundred ninety-eight million, four hundred forty-six thousand, six hundred eighty-seven".