1650894563 has 2 divisors, whose sum is σ = 1650894564. Its totient is φ = 1650894562.

The previous prime is 1650894559. The next prime is 1650894569. The reversal of 1650894563 is 3654980561.

It is a happy number.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1650894563 - 2² = 1650894559 is a prime.

It is not a weakly prime, because it can be changed into another prime (1650894569) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825447281 + 825447282.

It is an arithmetic number, because the mean of its divisors is an integer number (825447282).

Almost surely, 2^1650894563 is an apocalyptic number.

1650894563 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650894563 is an equidigital number, since it uses as much as digits as its factorization.

1650894563 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 777600, while the sum is 47.

The square root of 1650894563 is about 40631.2018404575. The cubic root of 1650894563 is about 1181.8792622820.

The spelling of 1650894563 in words is "one billion, six hundred fifty million, eight hundred ninety-four thousand, five hundred sixty-three".