1650716653 has 4 divisors (see below), whose sum is σ = 1655615260. Its totient is φ = 1645818048.

The previous prime is 1650716651. The next prime is 1650716659. The reversal of 1650716653 is 3566170561.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1234679044 + 416037609 = 35138^2 + 20397^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650716653 - 2¹ = 1650716651 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 (1650716651) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2448798 + ... + 2449471.

It is an arithmetic number, because the mean of its divisors is an integer number (413903815).

Almost surely, 2^1650716653 is an apocalyptic number.

It is an amenable number.

1650716653 is a deficient number, since it is larger than the sum of its proper divisors (4898607).

1650716653 is an equidigital number, since it uses as much as digits as its factorization.

1650716653 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4898606.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 1650716653 is about 40629.0124541565. The cubic root of 1650716653 is about 1181.8368053624.

The spelling of 1650716653 in words is "one billion, six hundred fifty million, seven hundred sixteen thousand, six hundred fifty-three".