164401365 has 16 divisors (see below), whose sum is σ = 263291328. Its totient is φ = 87597696.

The previous prime is 164401361. The next prime is 164401387. The reversal of 164401365 is 563104461.

It is not a de Polignac number, because 164401365 - 2² = 164401361 is a prime.

It is a super-3 number, since 3×164401365³ (a number of 26 digits) contains 333 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164401361) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 13302 + ... + 22488.

It is an arithmetic number, because the mean of its divisors is an integer number (16455708).

Almost surely, 2^164401365 is an apocalyptic number.

164401365 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

164401365 is a deficient number, since it is larger than the sum of its proper divisors (98889963).

164401365 is a wasteful number, since it uses less digits than its factorization.

164401365 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10388.

The product of its (nonzero) digits is 8640, while the sum is 30.

The square root of 164401365 is about 12821.9095691710. The cubic root of 164401365 is about 547.8165388767.

The spelling of 164401365 in words is "one hundred sixty-four million, four hundred one thousand, three hundred sixty-five".