1559497990 has 16 divisors (see below), whose sum is σ = 2827293840. Its totient is φ = 619310880.

The previous prime is 1559497987. The next prime is 1559498011. The reversal of 1559497990 is 997949551.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 559581 + ... + 562360.

It is an arithmetic number, because the mean of its divisors is an integer number (176705865).

Almost surely, 2^1559497990 is an apocalyptic number.

1559497990 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1559497990 is a deficient number, since it is larger than the sum of its proper divisors (1267795850).

1559497990 is a wasteful number, since it uses less digits than its factorization.

1559497990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1122087.

The product of its (nonzero) digits is 4592700, while the sum is 58.

The square root of 1559497990 is about 39490.4797387927. The cubic root of 1559497990 is about 1159.6535801670.

The spelling of 1559497990 in words is "one billion, five hundred fifty-nine million, four hundred ninety-seven thousand, nine hundred ninety".