2191560485 has 16 divisors (see below), whose sum is σ = 2643840000. Its totient is φ = 1743959616.

The previous prime is 2191560473. The next prime is 2191560493. The reversal of 2191560485 is 5840651912.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-2191560485 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1461266 + ... + 1462764.

It is an arithmetic number, because the mean of its divisors is an integer number (165240000).

Almost surely, 2^2191560485 is an apocalyptic number.

It is an amenable number.

2191560485 is a deficient number, since it is larger than the sum of its proper divisors (452279515).

2191560485 is a wasteful number, since it uses less digits than its factorization.

2191560485 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2860.

The product of its (nonzero) digits is 86400, while the sum is 41.

The square root of 2191560485 is about 46814.1056199945. The cubic root of 2191560485 is about 1298.9262306931.

The spelling of 2191560485 in words is "two billion, one hundred ninety-one million, five hundred sixty thousand, four hundred eighty-five".