1602222561 has 6 divisors (see below), whose sum is σ = 2314321490. Its totient is φ = 1068148368.

The previous prime is 1602222521. The next prime is 1602222637. The reversal of 1602222561 is 1652222061.

1602222561 is a `hidden beast` number, since 1 + 60 + 22 + 22 + 561 = 666.

It can be written as a sum of positive squares in only one way, i.e., 1549209600 + 53012961 = 39360^2 + 7281^2 .

It is not a de Polignac number, because 1602222561 - 2⁶ = 1602222497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1602222521) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 89012356 + ... + 89012373.

Almost surely, 2^1602222561 is an apocalyptic number.

It is an amenable number.

1602222561 is a deficient number, since it is larger than the sum of its proper divisors (712098929).

1602222561 is a wasteful number, since it uses less digits than its factorization.

1602222561 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 178024735 (or 178024732 counting only the distinct ones).

The product of its (nonzero) digits is 2880, while the sum is 27.

The square root of 1602222561 is about 40027.7723711925. The cubic root of 1602222561 is about 1170.1484120303.

It can be divided in two parts, 16022 and 22561, that added together give a palindrome (38583).

The spelling of 1602222561 in words is "one billion, six hundred two million, two hundred twenty-two thousand, five hundred sixty-one".