1602904489 has 2 divisors, whose sum is σ = 1602904490. Its totient is φ = 1602904488.

The previous prime is 1602904451. The next prime is 1602904529. The reversal of 1602904489 is 9844092061.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 1574899225 + 28005264 = 39685^2 + 5292^2 .

It is an emirp because it is prime and its reverse (9844092061) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1602904489 is a prime.

It is a super-2 number, since 2×1602904489² = 5138605601712702242, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (1602904439) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801452244 + 801452245.

It is an arithmetic number, because the mean of its divisors is an integer number (801452245).

Almost surely, 2^1602904489 is an apocalyptic number.

It is an amenable number.

1602904489 is a deficient number, since it is larger than the sum of its proper divisors (1).

1602904489 is an equidigital number, since it uses as much as digits as its factorization.

1602904489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 124416, while the sum is 43.

The square root of 1602904489 is about 40036.2896507656. The cubic root of 1602904489 is about 1170.3143989133.

The spelling of 1602904489 in words is "one billion, six hundred two million, nine hundred four thousand, four hundred eighty-nine".