162538665 has 16 divisors (see below), whose sum is σ = 261787776. Its totient is φ = 86112000.

The previous prime is 162538657. The next prime is 162538681. The reversal of 162538665 is 566835261.

It is a happy number.

It is not a de Polignac number, because 162538665 - 2³ = 162538657 is a prime.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33616 + ... + 38145.

It is an arithmetic number, because the mean of its divisors is an integer number (16361736).

Almost surely, 2^162538665 is an apocalyptic number.

162538665 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

162538665 is a deficient number, since it is larger than the sum of its proper divisors (99249111).

162538665 is a wasteful number, since it uses less digits than its factorization.

162538665 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71920.

The product of its digits is 259200, while the sum is 42.

The square root of 162538665 is about 12749.0652598534. The cubic root of 162538665 is about 545.7397188222.

The spelling of 162538665 in words is "one hundred sixty-two million, five hundred thirty-eight thousand, six hundred sixty-five".