1165542030 has 96 divisors (see below), whose sum is σ = 3141815040. Its totient is φ = 299473920.

The previous prime is 1165542019. The next prime is 1165542073. The reversal of 1165542030 is 302455611.

1165542030 is a `hidden beast` number, since 1 + 1 + 655 + 4 + 2 + 0 + 3 + 0 = 666.

It is a junction number, because it is equal to n+sod(n) for n = 1165541985 and 1165542003.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 749734 + ... + 751286.

It is an arithmetic number, because the mean of its divisors is an integer number (32727240).

Almost surely, 2^1165542030 is an apocalyptic number.

1165542030 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165542030, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1570907520).

1165542030 is an abundant number, since it is smaller than the sum of its proper divisors (1976273010).

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

1165542030 is a wasteful number, since it uses less digits than its factorization.

1165542030 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1866 (or 1863 counting only the distinct ones).

The product of its (nonzero) digits is 3600, while the sum is 27.

The square root of 1165542030 is about 34140.0355887336. The cubic root of 1165542030 is about 1052.3882237336.

Adding to 1165542030 its reverse (302455611), we get a palindrome (1467997641).

The spelling of 1165542030 in words is "one billion, one hundred sixty-five million, five hundred forty-two thousand, thirty".