1603228855 has 4 divisors (see below), whose sum is σ = 1923874632. Its totient is φ = 1282583080.

The previous prime is 1603228811. The next prime is 1603228927. The reversal of 1603228855 is 5588223061.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5588223061 = 47 ⋅118898363.

It is not a de Polignac number, because 1603228855 - 2⁹ = 1603228343 is a prime.

It is a super-2 number, since 2×1603228855² = 5140685523009222050, which contains 22 as substring.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 160322881 + ... + 160322890.

It is an arithmetic number, because the mean of its divisors is an integer number (480968658).

Almost surely, 2^1603228855 is an apocalyptic number.

1603228855 is a deficient number, since it is larger than the sum of its proper divisors (320645777).

1603228855 is an equidigital number, since it uses as much as digits as its factorization.

1603228855 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 320645776.

The product of its (nonzero) digits is 115200, while the sum is 40.

The square root of 1603228855 is about 40040.3403457064. The cubic root of 1603228855 is about 1170.3933357432.

The spelling of 1603228855 in words is "one billion, six hundred three million, two hundred twenty-eight thousand, eight hundred fifty-five".