1602405361 has 4 divisors (see below), whose sum is σ = 1645713652. Its totient is φ = 1559097072.

The previous prime is 1602405349. The next prime is 1602405379. The reversal of 1602405361 is 1635042061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1635042061 = 10247 ⋅159563.

It can be written as a sum of positive squares in 2 ways, for example, as 1327873600 + 274531761 = 36440^2 + 16569^2 .

It is a cyclic number.

It is not a de Polignac number, because 1602405361 - 2¹⁵ = 1602372593 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1602405391) 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 in 3 ways as a sum of consecutive naturals, for example, 21654090 + ... + 21654163.

It is an arithmetic number, because the mean of its divisors is an integer number (411428413).

Almost surely, 2^1602405361 is an apocalyptic number.

It is an amenable number.

1602405361 is a deficient number, since it is larger than the sum of its proper divisors (43308291).

1602405361 is an equidigital number, since it uses as much as digits as its factorization.

1602405361 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43308290.

The product of its (nonzero) digits is 4320, while the sum is 28.

The square root of 1602405361 is about 40030.0557206707. The cubic root of 1602405361 is about 1170.1929116732.

The spelling of 1602405361 in words is "one billion, six hundred two million, four hundred five thousand, three hundred sixty-one".