164274257 has 8 divisors (see below), whose sum is σ = 195904896. Its totient is φ = 134684352.

The previous prime is 164274251. The next prime is 164274269. The reversal of 164274257 is 752472461.

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 164274257 - 2¹⁰ = 164273233 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 164274257.

It is not an unprimeable number, because it can be changed into a prime (164274251) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 510008 + ... + 510329.

It is an arithmetic number, because the mean of its divisors is an integer number (24488112).

Almost surely, 2^164274257 is an apocalyptic number.

It is an amenable number.

164274257 is a deficient number, since it is larger than the sum of its proper divisors (31630639).

164274257 is a wasteful number, since it uses less digits than its factorization.

164274257 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1020367.

The product of its digits is 94080, while the sum is 38.

The square root of 164274257 is about 12816.9519387411. The cubic root of 164274257 is about 547.6753198185.

The spelling of 164274257 in words is "one hundred sixty-four million, two hundred seventy-four thousand, two hundred fifty-seven".