1163544456 has 16 divisors (see below), whose sum is σ = 2908861200. Its totient is φ = 387848144.

The previous prime is 1163544451. The next prime is 1163544461. The reversal of 1163544456 is 6544453611.

It is an interprime number because it is at equal distance from previous prime (1163544451) and next prime (1163544461).

It is a super-3 number, since 3×1163544456³ (a number of 28 digits) contains 333 as substring.

It is not an unprimeable number, because it can be changed into a prime (1163544451) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 24240486 + ... + 24240533.

It is an arithmetic number, because the mean of its divisors is an integer number (181803825).

Almost surely, 2^1163544456 is an apocalyptic number.

It is an amenable number.

1163544456 is an abundant number, since it is smaller than the sum of its proper divisors (1745316744).

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

1163544456 is a wasteful number, since it uses less digits than its factorization.

1163544456 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 48481028 (or 48481024 counting only the distinct ones).

The product of its digits is 172800, while the sum is 39.

The square root of 1163544456 is about 34110.7674495899. The cubic root of 1163544456 is about 1051.7866651410.

The spelling of 1163544456 in words is "one billion, one hundred sixty-three million, five hundred forty-four thousand, four hundred fifty-six".