1163609028 has 36 divisors (see below), whose sum is σ = 3013088988. Its totient is φ = 378408960.

The previous prime is 1163609017. The next prime is 1163609053. The reversal of 1163609028 is 8209063611.

1163609028 is a `hidden beast` number, since 11 + 636 + 0 + 9 + 0 + 2 + 8 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 23736384 + 1139872644 = 4872^2 + 33762^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 1163608983 and 1163609001.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 392701 + ... + 395652.

Almost surely, 2^1163609028 is an apocalyptic number.

1163609028 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is an amenable number.

1163609028 is an abundant number, since it is smaller than the sum of its proper divisors (1849479960).

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

1163609028 is a wasteful number, since it uses less digits than its factorization.

1163609028 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 788404 (or 788399 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 1163609028 is about 34111.7139411083. The cubic root of 1163609028 is about 1051.8061214130.

The spelling of 1163609028 in words is "one billion, one hundred sixty-three million, six hundred nine thousand, twenty-eight".