164247983 has 4 divisors (see below), whose sum is σ = 164279808. Its totient is φ = 164216160.

The previous prime is 164247977. The next prime is 164248001. The reversal of 164247983 is 389742461.

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

It is a cyclic number.

It is not a de Polignac number, because 164247983 - 2¹² = 164243887 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164247383) 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, 6191 + ... + 19152.

It is an arithmetic number, because the mean of its divisors is an integer number (41069952).

Almost surely, 2^164247983 is an apocalyptic number.

164247983 is a deficient number, since it is larger than the sum of its proper divisors (31825).

164247983 is an equidigital number, since it uses as much as digits as its factorization.

164247983 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31824.

The product of its digits is 290304, while the sum is 44.

The square root of 164247983 is about 12815.9269270701. The cubic root of 164247983 is about 547.6461198922.

The spelling of 164247983 in words is "one hundred sixty-four million, two hundred forty-seven thousand, nine hundred eighty-three".