164958693 has 4 divisors (see below), whose sum is σ = 219944928. Its totient is φ = 109972460.

The previous prime is 164958679. The next prime is 164958709. The reversal of 164958693 is 396859461.

164958693 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, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 164958693 - 2⁹ = 164958181 is a prime.

It is a super-2 number, since 2×164958693² = 54422740792536498, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164958653) 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, 27493113 + ... + 27493118.

It is an arithmetic number, because the mean of its divisors is an integer number (54986232).

Almost surely, 2^164958693 is an apocalyptic number.

It is an amenable number.

164958693 is a deficient number, since it is larger than the sum of its proper divisors (54986235).

164958693 is an equidigital number, since it uses as much as digits as its factorization.

164958693 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 54986234.

The product of its digits is 1399680, while the sum is 51.

The square root of 164958693 is about 12843.6246052273. The cubic root of 164958693 is about 548.4348815437.

The spelling of 164958693 in words is "one hundred sixty-four million, nine hundred fifty-eight thousand, six hundred ninety-three".