164287423 has 4 divisors (see below), whose sum is σ = 165741408. Its totient is φ = 162833440.

The previous prime is 164287399. The next prime is 164287429. The reversal of 164287423 is 324782461.

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 164287423 - 2⁹ = 164286911 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 (164287429) 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, 726823 + ... + 727048.

It is an arithmetic number, because the mean of its divisors is an integer number (41435352).

Almost surely, 2^164287423 is an apocalyptic number.

164287423 is a deficient number, since it is larger than the sum of its proper divisors (1453985).

164287423 is a wasteful number, since it uses less digits than its factorization.

164287423 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1453984.

The product of its digits is 64512, while the sum is 37.

The square root of 164287423 is about 12817.4655451068. The cubic root of 164287423 is about 547.6899508401.

The spelling of 164287423 in words is "one hundred sixty-four million, two hundred eighty-seven thousand, four hundred twenty-three".