1652071661 has 2 divisors, whose sum is σ = 1652071662. Its totient is φ = 1652071660.

The previous prime is 1652071657. The next prime is 1652071697. The reversal of 1652071661 is 1661702561.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1354681636 + 297390025 = 36806^2 + 17245^2 .

It is a cyclic number.

It is not a de Polignac number, because 1652071661 - 2² = 1652071657 is a prime.

It is a super-3 number, since 3×1652071661³ (a number of 29 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1652071061) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 826035830 + 826035831.

It is an arithmetic number, because the mean of its divisors is an integer number (826035831).

Almost surely, 2^1652071661 is an apocalyptic number.

It is an amenable number.

1652071661 is a deficient number, since it is larger than the sum of its proper divisors (1).

1652071661 is an equidigital number, since it uses as much as digits as its factorization.

1652071661 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 15120, while the sum is 35.

The square root of 1652071661 is about 40645.6844080648. The cubic root of 1652071661 is about 1182.1600912815.

The spelling of 1652071661 in words is "one billion, six hundred fifty-two million, seventy-one thousand, six hundred sixty-one".