1603661316 has 24 divisors (see below), whose sum is σ = 3744284544. Its totient is φ = 534209760.

The previous prime is 1603661287. The next prime is 1603661321. The reversal of 1603661316 is 6131663061.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 23215 + ... + 61206.

It is an arithmetic number, because the mean of its divisors is an integer number (156011856).

Almost surely, 2^1603661316 is an apocalyptic number.

It is an amenable number.

1603661316 is an abundant number, since it is smaller than the sum of its proper divisors (2140623228).

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

1603661316 is a wasteful number, since it uses less digits than its factorization.

1603661316 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 86011 (or 86009 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 33.

The square root of 1603661316 is about 40045.7402978144. The cubic root of 1603661316 is about 1170.4985617204.

The spelling of 1603661316 in words is "one billion, six hundred three million, six hundred sixty-one thousand, three hundred sixteen".