1556116446 has 32 divisors (see below), whose sum is σ = 3143992320. Its totient is φ = 513425024.

The previous prime is 1556116439. The next prime is 1556116447. The reversal of 1556116446 is 6446116551.

It is a happy number.

Its product of digits (86400) is a multiple of the sum of its prime divisors (3200).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1556116447) by changing a digit.

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, 852691 + ... + 854513.

It is an arithmetic number, because the mean of its divisors is an integer number (98249760).

Almost surely, 2^1556116446 is an apocalyptic number.

1556116446 is an abundant number, since it is smaller than the sum of its proper divisors (1587875874).

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

1556116446 is a wasteful number, since it uses less digits than its factorization.

1556116446 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3200.

The product of its digits is 86400, while the sum is 39.

The square root of 1556116446 is about 39447.6418306595. The cubic root of 1556116446 is about 1158.8147937129.

The spelling of 1556116446 in words is "one billion, five hundred fifty-six million, one hundred sixteen thousand, four hundred forty-six".