164893843 has 4 divisors (see below), whose sum is σ = 165000640. Its totient is φ = 164787048.

The previous prime is 164893823. The next prime is 164893847. The reversal of 164893843 is 348398461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 348398461 = 2243 ⋅155327.

It is a cyclic number.

It is not a de Polignac number, because 164893843 - 2¹⁷ = 164762771 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164893793 and 164893802.

It is not an unprimeable number, because it can be changed into a prime (164893847) 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, 51048 + ... + 54181.

It is an arithmetic number, because the mean of its divisors is an integer number (41250160).

Almost surely, 2^164893843 is an apocalyptic number.

164893843 is a deficient number, since it is larger than the sum of its proper divisors (106797).

164893843 is a wasteful number, since it uses less digits than its factorization.

164893843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 106796.

The product of its digits is 497664, while the sum is 46.

The square root of 164893843 is about 12841.0997581983. The cubic root of 164893843 is about 548.3630036226.

The spelling of 164893843 in words is "one hundred sixty-four million, eight hundred ninety-three thousand, eight hundred forty-three".