1602970561 has 2 divisors, whose sum is σ = 1602970562. Its totient is φ = 1602970560.

The previous prime is 1602970559. The next prime is 1602970591. The reversal of 1602970561 is 1650792061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 803155600 + 799814961 = 28340^2 + 28281^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602970561 - 2¹ = 1602970559 is a prime.

Together with 1602970559, it forms a pair of twin primes.

It is a self number, because there is not a number n which added to its sum of digits gives 1602970561.

It is not a weakly prime, because it can be changed into another prime (1602970591) 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, 801485280 + 801485281.

It is an arithmetic number, because the mean of its divisors is an integer number (801485281).

Almost surely, 2^1602970561 is an apocalyptic number.

It is an amenable number.

1602970561 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602970561 is an equidigital number, since it uses as much as digits as its factorization.

1602970561 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 22680, while the sum is 37.

The square root of 1602970561 is about 40037.1147936512. The cubic root of 1602970561 is about 1170.3304788796.

The spelling of 1602970561 in words is "one billion, six hundred two million, nine hundred seventy thousand, five hundred sixty-one".