1603416649 has 2 divisors, whose sum is σ = 1603416650. Its totient is φ = 1603416648.

The previous prime is 1603416587. The next prime is 1603416653. The reversal of 1603416649 is 9466143061.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1602561024 + 855625 = 40032^2 + 925^2 .

It is an emirp because it is prime and its reverse (9466143061) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1603416649 - 2¹¹ = 1603414601 is a prime.

It is not a weakly prime, because it can be changed into another prime (1603416449) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 801708324 + 801708325.

It is an arithmetic number, because the mean of its divisors is an integer number (801708325).

Almost surely, 2^1603416649 is an apocalyptic number.

It is an amenable number.

1603416649 is a deficient number, since it is larger than the sum of its proper divisors (1).

1603416649 is an equidigital number, since it uses as much as digits as its factorization.

1603416649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 93312, while the sum is 40.

The square root of 1603416649 is about 40042.6853370250. The cubic root of 1603416649 is about 1170.4390319152.

The spelling of 1603416649 in words is "one billion, six hundred three million, four hundred sixteen thousand, six hundred forty-nine".