1650365657 has 2 divisors, whose sum is σ = 1650365658. Its totient is φ = 1650365656.

The previous prime is 1650365599. The next prime is 1650365701. The reversal of 1650365657 is 7565630561.

It is an a-pointer prime, because the next prime (1650365701) can be obtained adding 1650365657 to its sum of digits (44).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1539463696 + 110901961 = 39236^2 + 10531^2 .

It is a cyclic number.

It is not a de Polignac number, because 1650365657 - 2⁸ = 1650365401 is a prime.

It is not a weakly prime, because it can be changed into another prime (1650365257) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 825182828 + 825182829.

It is an arithmetic number, because the mean of its divisors is an integer number (825182829).

Almost surely, 2^1650365657 is an apocalyptic number.

It is an amenable number.

1650365657 is a deficient number, since it is larger than the sum of its proper divisors (1).

1650365657 is an equidigital number, since it uses as much as digits as its factorization.

1650365657 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 567000, while the sum is 44.

The square root of 1650365657 is about 40624.6927003762. The cubic root of 1650365657 is about 1181.7530337885.

The spelling of 1650365657 in words is "one billion, six hundred fifty million, three hundred sixty-five thousand, six hundred fifty-seven".