1165405730 has 32 divisors (see below), whose sum is σ = 2153547648. Its totient is φ = 453808000.

The previous prime is 1165405727. The next prime is 1165405753. The reversal of 1165405730 is 375045611.

1165405730 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 203405 + ... + 209055.

It is an arithmetic number, because the mean of its divisors is an integer number (67298364).

Almost surely, 2^1165405730 is an apocalyptic number.

1165405730 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1165405730 is a deficient number, since it is larger than the sum of its proper divisors (988141918).

1165405730 is a wasteful number, since it uses less digits than its factorization.

1165405730 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6202.

The product of its (nonzero) digits is 12600, while the sum is 32.

The square root of 1165405730 is about 34138.0393403019. The cubic root of 1165405730 is about 1052.3471995855.

The spelling of 1165405730 in words is "one billion, one hundred sixty-five million, four hundred five thousand, seven hundred thirty".