1603645242 has 8 divisors (see below), whose sum is σ = 3207290496. Its totient is φ = 534548412.

The previous prime is 1603645223. The next prime is 1603645243. The reversal of 1603645242 is 2425463061.

It is a sphenic number, since it is the product of 3 distinct primes.

1603645242 is an admirable number.

It is not an unprimeable number, because it can be changed into a prime (1603645243) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 133637098 + ... + 133637109.

It is an arithmetic number, because the mean of its divisors is an integer number (400911312).

Almost surely, 2^1603645242 is an apocalyptic number.

1603645242 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

1603645242 is a wasteful number, since it uses less digits than its factorization.

1603645242 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 267274212.

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 1603645242 is about 40045.5396018083. The cubic root of 1603645242 is about 1170.4946509494.

The spelling of 1603645242 in words is "one billion, six hundred three million, six hundred forty-five thousand, two hundred forty-two".