164042465 has 8 divisors (see below), whose sum is σ = 199789440. Its totient is φ = 129274992.

The previous prime is 164042443. The next prime is 164042477. The reversal of 164042465 is 564240461.

164042465 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is a cyclic number.

It is not a de Polignac number, because 164042465 - 2¹⁰ = 164041441 is a prime.

It is a Curzon 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, 244505 + ... + 245174.

It is an arithmetic number, because the mean of its divisors is an integer number (24973680).

Almost surely, 2^164042465 is an apocalyptic number.

It is an amenable number.

164042465 is a deficient number, since it is larger than the sum of its proper divisors (35746975).

164042465 is an equidigital number, since it uses as much as digits as its factorization.

164042465 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 489751.

The product of its (nonzero) digits is 23040, while the sum is 32.

The square root of 164042465 is about 12807.9063472529. The cubic root of 164042465 is about 547.4176074732.

The spelling of 164042465 in words is "one hundred sixty-four million, forty-two thousand, four hundred sixty-five".