2197433664 has 112 divisors (see below), whose sum is σ = 6542227200. Its totient is φ = 723161088.

The previous prime is 2197433647. The next prime is 2197433671. The reversal of 2197433664 is 4663347912.

2197433664 is a `hidden beast` number, since 219 + 74 + 3 + 366 + 4 = 666.

It is a congruent number.

It is an unprimeable number.

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 15 ways as a sum of consecutive naturals, for example, 128464 + ... + 144560.

Almost surely, 2^2197433664 is an apocalyptic number.

2197433664 is a gapful number since it is divisible by the number (24) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 2197433664, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (3271113600).

2197433664 is an abundant number, since it is smaller than the sum of its proper divisors (4344793536).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

2197433664 is a wasteful number, since it uses less digits than its factorization.

2197433664 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 16197 (or 16181 counting only the distinct ones).

The product of its digits is 653184, while the sum is 45.

The square root of 2197433664 is about 46876.7923817319. The cubic root of 2197433664 is about 1300.0855296784.

The spelling of 2197433664 in words is "two billion, one hundred ninety-seven million, four hundred thirty-three thousand, six hundred sixty-four".