1603661012 has 12 divisors (see below), whose sum is σ = 2806712160. Its totient is φ = 801743256.

The previous prime is 1603660973. The next prime is 1603661027. The reversal of 1603661012 is 2101663061.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 37403 + ... + 67869.

It is an arithmetic number, because the mean of its divisors is an integer number (233892680).

Almost surely, 2^1603661012 is an apocalyptic number.

It is an amenable number.

1603661012 is a deficient number, since it is larger than the sum of its proper divisors (1203051148).

1603661012 is a wasteful number, since it uses less digits than its factorization.

1603661012 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43630 (or 43628 counting only the distinct ones).

The product of its (nonzero) digits is 1296, while the sum is 26.

The square root of 1603661012 is about 40045.7365021546. The cubic root of 1603661012 is about 1170.4984877581.

The spelling of 1603661012 in words is "one billion, six hundred three million, six hundred sixty-one thousand, twelve".