165868054 has 16 divisors (see below), whose sum is σ = 274473360. Its totient is φ = 74546560.

The previous prime is 165868039. The next prime is 165868061. The reversal of 165868054 is 450868561.

165868054 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a super-2 number, since 2×165868054² = 55024422675493832, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 165868054.

It is a congruent number.

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, 40399 + ... + 44314.

It is an arithmetic number, because the mean of its divisors is an integer number (17154585).

Almost surely, 2^165868054 is an apocalyptic number.

165868054 is a deficient number, since it is larger than the sum of its proper divisors (108605306).

165868054 is a wasteful number, since it uses less digits than its factorization.

165868054 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84815.

The product of its (nonzero) digits is 230400, while the sum is 43.

The square root of 165868054 is about 12878.9772109434. The cubic root of 165868054 is about 549.4408134844.

The spelling of 165868054 in words is "one hundred sixty-five million, eight hundred sixty-eight thousand, fifty-four".