164237943 has 4 divisors (see below), whose sum is σ = 218983928. Its totient is φ = 109491960.

The previous prime is 164237891. The next prime is 164237959. The reversal of 164237943 is 349732461.

164237943 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 164237943 - 2²⁴ = 147460727 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 (164237743) 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, 27372988 + ... + 27372993.

It is an arithmetic number, because the mean of its divisors is an integer number (54745982).

Almost surely, 2^164237943 is an apocalyptic number.

164237943 is a deficient number, since it is larger than the sum of its proper divisors (54745985).

164237943 is an equidigital number, since it uses as much as digits as its factorization.

164237943 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54745984.

The product of its digits is 108864, while the sum is 39.

The square root of 164237943 is about 12815.5352209730. The cubic root of 164237943 is about 547.6349609950.

The spelling of 164237943 in words is "one hundred sixty-four million, two hundred thirty-seven thousand, nine hundred forty-three".