164745545 has 8 divisors (see below), whose sum is σ = 197764224. Its totient is φ = 131750064.

The previous prime is 164745541. The next prime is 164745547. The reversal of 164745545 is 545547461.

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 164745545 - 2² = 164745541 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164745541) 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 7 ways as a sum of consecutive naturals, for example, 21632 + ... + 28238.

It is an arithmetic number, because the mean of its divisors is an integer number (24720528).

Almost surely, 2^164745545 is an apocalyptic number.

It is an amenable number.

164745545 is a deficient number, since it is larger than the sum of its proper divisors (33018679).

164745545 is an equidigital number, since it uses as much as digits as its factorization.

164745545 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11599.

The product of its digits is 336000, while the sum is 41.

The square root of 164745545 is about 12835.3241096592. The cubic root of 164745545 is about 548.1985634262.

The spelling of 164745545 in words is "one hundred sixty-four million, seven hundred forty-five thousand, five hundred forty-five".