164331851 has 4 divisors (see below), whose sum is σ = 164384352. Its totient is φ = 164279352.

The previous prime is 164331847. The next prime is 164331857. The reversal of 164331851 is 158133461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 158133461 = 6317 ⋅25033.

It is a cyclic number.

It is not a de Polignac number, because 164331851 - 2² = 164331847 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164331857) 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 3 ways as a sum of consecutive naturals, for example, 21236 + ... + 27921.

It is an arithmetic number, because the mean of its divisors is an integer number (41096088).

Almost surely, 2^164331851 is an apocalyptic number.

164331851 is a deficient number, since it is larger than the sum of its proper divisors (52501).

164331851 is an equidigital number, since it uses as much as digits as its factorization.

164331851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 52500.

The product of its digits is 8640, while the sum is 32.

The square root of 164331851 is about 12819.1985318896. The cubic root of 164331851 is about 547.7393167129.

The spelling of 164331851 in words is "one hundred sixty-four million, three hundred thirty-one thousand, eight hundred fifty-one".