2199278464 has 16 divisors (see below), whose sum is σ = 4381375320. Its totient is φ = 1099639168.

The previous prime is 2199278461. The next prime is 2199278467. The reversal of 2199278464 is 4648729912.

It is an interprime number because it is at equal distance from previous prime (2199278461) and next prime (2199278467).

It is a tau number, because it is divible by the number of its divisors (16).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (2199278461) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8590804 + ... + 8591059.

Almost surely, 2^2199278464 is an apocalyptic number.

It is an amenable number.

2199278464 is a deficient number, since it is larger than the sum of its proper divisors (2182096856).

2199278464 is an equidigital number, since it uses as much as digits as its factorization.

2199278464 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17181877 (or 17181865 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 52.

The square root of 2199278464 is about 46896.4653678718. The cubic root of 2199278464 is about 1300.4492459179.

The spelling of 2199278464 in words is "two billion, one hundred ninety-nine million, two hundred seventy-eight thousand, four hundred sixty-four".