219484661 has 16 divisors (see below), whose sum is σ = 244408320. Its totient is φ = 195415920.

The previous prime is 219484631. The next prime is 219484667. The reversal of 219484661 is 166484912.

219484661 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-219484661 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (219484667) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 248126 + ... + 249008.

It is an arithmetic number, because the mean of its divisors is an integer number (15275520).

Almost surely, 2^219484661 is an apocalyptic number.

It is an amenable number.

219484661 is a deficient number, since it is larger than the sum of its proper divisors (24923659).

219484661 is a wasteful number, since it uses less digits than its factorization.

219484661 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1336.

The product of its digits is 82944, while the sum is 41.

The square root of 219484661 is about 14815.0147148088. The cubic root of 219484661 is about 603.2093409073.

The spelling of 219484661 in words is "two hundred nineteen million, four hundred eighty-four thousand, six hundred sixty-one".