1165726572 has 48 divisors (see below), whose sum is σ = 2936183040. Its totient is φ = 358861888.

The previous prime is 1165726489. The next prime is 1165726613. The reversal of 1165726572 is 2756275611.

It is a happy number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64818 + ... + 80825.

It is an arithmetic number, because the mean of its divisors is an integer number (61170480).

Almost surely, 2^1165726572 is an apocalyptic number.

1165726572 is a gapful number since it is divisible by the number (12) formed by its first and last digit.

It is an amenable number.

1165726572 is an abundant number, since it is smaller than the sum of its proper divisors (1770456468).

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

1165726572 is a wasteful number, since it uses less digits than its factorization.

1165726572 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 145702 (or 145700 counting only the distinct ones).

The product of its digits is 176400, while the sum is 42.

The square root of 1165726572 is about 34142.7382030206. The cubic root of 1165726572 is about 1052.4437628658.

The spelling of 1165726572 in words is "one billion, one hundred sixty-five million, seven hundred twenty-six thousand, five hundred seventy-two".