1161423036 has 60 divisors (see below), whose sum is σ = 3039442560. Its totient is φ = 386726400.

The previous prime is 1161422987. The next prime is 1161423037. The reversal of 1161423036 is 6303241611.

1161423036 is a `hidden beast` number, since 11 + 614 + 2 + 3 + 0 + 36 = 666.

1161423036 is digitally balanced in base 4, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (27).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1161423037) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 517605 + ... + 519843.

It is an arithmetic number, because the mean of its divisors is an integer number (50657376).

Almost surely, 2^1161423036 is an apocalyptic number.

It is an amenable number.

1161423036 is an abundant number, since it is smaller than the sum of its proper divisors (1878019524).

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

1161423036 is a wasteful number, since it uses less digits than its factorization.

1161423036 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3856 (or 3845 counting only the distinct ones).

The product of its (nonzero) digits is 2592, while the sum is 27.

The square root of 1161423036 is about 34079.6572165860. The cubic root of 1161423036 is about 1051.1470566630.

Adding to 1161423036 its reverse (6303241611), we get a palindrome (7464664647).

The spelling of 1161423036 in words is "one billion, one hundred sixty-one million, four hundred twenty-three thousand, thirty-six".