1163420556 has 24 divisors (see below), whose sum is σ = 2777780544. Its totient is φ = 378787920.

The previous prime is 1163420527. The next prime is 1163420567. The reversal of 1163420556 is 6550243611.

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, 1126830 + ... + 1127861.

It is an arithmetic number, because the mean of its divisors is an integer number (115740856).

Almost surely, 2^1163420556 is an apocalyptic number.

It is an amenable number.

1163420556 is an abundant number, since it is smaller than the sum of its proper divisors (1614359988).

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

1163420556 is a wasteful number, since it uses less digits than its factorization.

1163420556 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2254741 (or 2254739 counting only the distinct ones).

The product of its (nonzero) digits is 21600, while the sum is 33.

The square root of 1163420556 is about 34108.9512591636. The cubic root of 1163420556 is about 1051.7493306576.

The spelling of 1163420556 in words is "one billion, one hundred sixty-three million, four hundred twenty thousand, five hundred fifty-six".