1559040020 has 24 divisors (see below), whose sum is σ = 3287692800. Its totient is φ = 621004832.

The previous prime is 1559040019. The next prime is 1559040037. The reversal of 1559040020 is 200409551.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 158300 + ... + 167859.

It is an arithmetic number, because the mean of its divisors is an integer number (136987200).

Almost surely, 2^1559040020 is an apocalyptic number.

1559040020 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is an amenable number.

1559040020 is an abundant number, since it is smaller than the sum of its proper divisors (1728652780).

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

1559040020 is a wasteful number, since it uses less digits than its factorization.

1559040020 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 326407 (or 326405 counting only the distinct ones).

The product of its (nonzero) digits is 1800, while the sum is 26.

The square root of 1559040020 is about 39484.6808268726. The cubic root of 1559040020 is about 1159.5400524914.

Adding to 1559040020 its reverse (200409551), we get a palindrome (1759449571).

The spelling of 1559040020 in words is "one billion, five hundred fifty-nine million, forty thousand, twenty".