219661041 has 16 divisors (see below), whose sum is σ = 299018304. Its totient is φ = 143398464.

The previous prime is 219661037. The next prime is 219661073. The reversal of 219661041 is 140166912.

It is a happy number.

It is not a de Polignac number, because 219661041 - 2² = 219661037 is a prime.

It is not an unprimeable number, because it can be changed into a prime (219661031) 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, 31615 + ... + 37931.

It is an arithmetic number, because the mean of its divisors is an integer number (18688644).

Almost surely, 2^219661041 is an apocalyptic number.

It is an amenable number.

219661041 is a deficient number, since it is larger than the sum of its proper divisors (79357263).

219661041 is a wasteful number, since it uses less digits than its factorization.

219661041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6560.

The product of its (nonzero) digits is 2592, while the sum is 30.

The square root of 219661041 is about 14820.9662640463. The cubic root of 219661041 is about 603.3708792672.

The spelling of 219661041 in words is "two hundred nineteen million, six hundred sixty-one thousand, forty-one".