1165125536 has 48 divisors (see below), whose sum is σ = 2452016448. Its totient is φ = 543628800.

The previous prime is 1165125529. The next prime is 1165125601. The reversal of 1165125536 is 6355215611.

It is a junction number, because it is equal to n+sod(n) for n = 1165125496 and 1165125505.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 10871 + ... + 49481.

It is an arithmetic number, because the mean of its divisors is an integer number (51083676).

Almost surely, 2^1165125536 is an apocalyptic number.

1165125536 is a gapful number since it is divisible by the number (16) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 1165125536, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1226008224).

1165125536 is an abundant number, since it is smaller than the sum of its proper divisors (1286890912).

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

1165125536 is a wasteful number, since it uses less digits than its factorization.

1165125536 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 38685 (or 38677 counting only the distinct ones).

The product of its digits is 27000, while the sum is 35.

The square root of 1165125536 is about 34133.9352551094. The cubic root of 1165125536 is about 1052.2628555676.

The spelling of 1165125536 in words is "one billion, one hundred sixty-five million, one hundred twenty-five thousand, five hundred thirty-six".