164581003 has 4 divisors (see below), whose sum is σ = 170256240. Its totient is φ = 158905768.

The previous prime is 164580973. The next prime is 164581019. The reversal of 164581003 is 300185461.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-164581003 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164581033) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2837575 + ... + 2837632.

It is an arithmetic number, because the mean of its divisors is an integer number (42564060).

Almost surely, 2^164581003 is an apocalyptic number.

164581003 is a deficient number, since it is larger than the sum of its proper divisors (5675237).

164581003 is an equidigital number, since it uses as much as digits as its factorization.

164581003 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5675236.

The product of its (nonzero) digits is 2880, while the sum is 28.

The square root of 164581003 is about 12828.9127754459. The cubic root of 164581003 is about 548.0159955460.

The spelling of 164581003 in words is "one hundred sixty-four million, five hundred eighty-one thousand, three".