1603081020 has 48 divisors (see below), whose sum is σ = 4491204480. Its totient is φ = 427242816.

The previous prime is 1603081019. The next prime is 1603081033. The reversal of 1603081020 is 201803061.

It is a congruent number.

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 15 ways as a sum of consecutive naturals, for example, 113511 + ... + 126849.

It is an arithmetic number, because the mean of its divisors is an integer number (93566760).

Almost surely, 2^1603081020 is an apocalyptic number.

1603081020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1603081020 is an abundant number, since it is smaller than the sum of its proper divisors (2888123460).

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

1603081020 is a wasteful number, since it uses less digits than its factorization.

1603081020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 15354 (or 15352 counting only the distinct ones).

The product of its (nonzero) digits is 288, while the sum is 21.

The square root of 1603081020 is about 40038.4942274307. The cubic root of 1603081020 is about 1170.3573603392.

Adding to 1603081020 its reverse (201803061), we get a palindrome (1804884081).

The spelling of 1603081020 in words is "one billion, six hundred three million, eighty-one thousand, twenty".