1540164165 has 16 divisors (see below), whose sum is σ = 2543755776. Its totient is φ = 794923200.

The previous prime is 1540164137. The next prime is 1540164211. The reversal of 1540164165 is 5614610451.

It is not a de Polignac number, because 1540164165 - 2⁵ = 1540164133 is a prime.

It is a Curzon number.

It is a congruent number.

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, 1655626 + ... + 1656555.

It is an arithmetic number, because the mean of its divisors is an integer number (158984736).

Almost surely, 2^1540164165 is an apocalyptic number.

1540164165 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1540164165 is a deficient number, since it is larger than the sum of its proper divisors (1003591611).

1540164165 is a wasteful number, since it uses less digits than its factorization.

1540164165 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3312220.

The product of its (nonzero) digits is 14400, while the sum is 33.

The square root of 1540164165 is about 39244.9253407367. The cubic root of 1540164165 is about 1154.8413829893.

The spelling of 1540164165 in words is "one billion, five hundred forty million, one hundred sixty-four thousand, one hundred sixty-five".