1602320641 has 4 divisors (see below), whose sum is σ = 1603711492. Its totient is φ = 1600929792.

The previous prime is 1602320639. The next prime is 1602320651. The reversal of 1602320641 is 1460232061.

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 1317690000 + 284630641 = 36300^2 + 16871^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602320641 - 2¹ = 1602320639 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1602320651) 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, 693696 + ... + 696001.

It is an arithmetic number, because the mean of its divisors is an integer number (400927873).

Almost surely, 2^1602320641 is an apocalyptic number.

It is an amenable number.

1602320641 is a deficient number, since it is larger than the sum of its proper divisors (1390851).

1602320641 is a wasteful number, since it uses less digits than its factorization.

1602320641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1390850.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 1602320641 is about 40028.9975018111. The cubic root of 1602320641 is about 1170.1722884083.

The spelling of 1602320641 in words is "one billion, six hundred two million, three hundred twenty thousand, six hundred forty-one".