164890293 has 16 divisors (see below), whose sum is σ = 233046720. Its totient is φ = 103344896.

The previous prime is 164890273. The next prime is 164890351. The reversal of 164890293 is 392098461.

It is a cyclic number.

It is not a de Polignac number, because 164890293 - 2¹⁰ = 164889269 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164890213) 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 15 ways as a sum of consecutive naturals, for example, 81571 + ... + 83567.

It is an arithmetic number, because the mean of its divisors is an integer number (14565420).

Almost surely, 2^164890293 is an apocalyptic number.

It is an amenable number.

164890293 is a deficient number, since it is larger than the sum of its proper divisors (68156427).

164890293 is a wasteful number, since it uses less digits than its factorization.

164890293 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3636.

The product of its (nonzero) digits is 93312, while the sum is 42.

The square root of 164890293 is about 12840.9615294183. The cubic root of 164890293 is about 548.3590683581.

The spelling of 164890293 in words is "one hundred sixty-four million, eight hundred ninety thousand, two hundred ninety-three".