165408434 has 8 divisors (see below), whose sum is σ = 248328048. Its totient is φ = 82632420.

The previous prime is 165408409. The next prime is 165408469. The reversal of 165408434 is 434804561.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 165408394 and 165408403.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 32972 + ... + 37655.

It is an arithmetic number, because the mean of its divisors is an integer number (31041006).

Almost surely, 2^165408434 is an apocalyptic number.

165408434 is a deficient number, since it is larger than the sum of its proper divisors (82919614).

165408434 is a wasteful number, since it uses less digits than its factorization.

165408434 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 71800.

The product of its (nonzero) digits is 46080, while the sum is 35.

The square root of 165408434 is about 12861.1210242342. The cubic root of 165408434 is about 548.9328442535.

The spelling of 165408434 in words is "one hundred sixty-five million, four hundred eight thousand, four hundred thirty-four".