164857694 has 4 divisors (see below), whose sum is σ = 247286544. Its totient is φ = 82428846.

The previous prime is 164857673. The next prime is 164857703. The reversal of 164857694 is 496758461.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 496758461 = 2281 ⋅217781.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 41214422 + ... + 41214425.

It is an arithmetic number, because the mean of its divisors is an integer number (61821636).

Almost surely, 2^164857694 is an apocalyptic number.

164857694 is a deficient number, since it is larger than the sum of its proper divisors (82428850).

164857694 is an equidigital number, since it uses as much as digits as its factorization.

164857694 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82428849.

The product of its digits is 1451520, while the sum is 50.

The square root of 164857694 is about 12839.6921302654. The cubic root of 164857694 is about 548.3229289042.

The spelling of 164857694 in words is "one hundred sixty-four million, eight hundred fifty-seven thousand, six hundred ninety-four".