1423665603 has 6 divisors (see below), whose sum is σ = 2056405884. Its totient is φ = 949110396.

The previous prime is 1423665601. The next prime is 1423665653. The reversal of 1423665603 is 3065663241.

1423665603 is a `hidden beast` number, since 1 + 42 + 3 + 6 + 6 + 5 + 603 = 666.

It is not a de Polignac number, because 1423665603 - 2¹ = 1423665601 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1423665601) 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 5 ways as a sum of consecutive naturals, for example, 79092525 + ... + 79092542.

It is an arithmetic number, because the mean of its divisors is an integer number (342734314).

Almost surely, 2^1423665603 is an apocalyptic number.

1423665603 is a deficient number, since it is larger than the sum of its proper divisors (632740281).

1423665603 is a wasteful number, since it uses less digits than its factorization.

1423665603 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158185073 (or 158185070 counting only the distinct ones).

The product of its (nonzero) digits is 77760, while the sum is 36.

The square root of 1423665603 is about 37731.4935166897. The cubic root of 1423665603 is about 1124.9571942231.

The spelling of 1423665603 in words is "one billion, four hundred twenty-three million, six hundred sixty-five thousand, six hundred three".