164157419 has 4 divisors (see below), whose sum is σ = 168594144. Its totient is φ = 159720696.

The previous prime is 164157403. The next prime is 164157439. The reversal of 164157419 is 914751461.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 914751461 = 13 ⋅70365497.

It is a cyclic number.

It is not a de Polignac number, because 164157419 - 2⁴ = 164157403 is a prime.

It is a super-2 number, since 2×164157419² = 53895316425483122, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (164157439) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2218307 + ... + 2218380.

It is an arithmetic number, because the mean of its divisors is an integer number (42148536).

Almost surely, 2^164157419 is an apocalyptic number.

164157419 is a deficient number, since it is larger than the sum of its proper divisors (4436725).

164157419 is an equidigital number, since it uses as much as digits as its factorization.

164157419 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4436724.

The product of its digits is 30240, while the sum is 38.

The square root of 164157419 is about 12812.3931800425. The cubic root of 164157419 is about 547.5454466282.

The spelling of 164157419 in words is "one hundred sixty-four million, one hundred fifty-seven thousand, four hundred nineteen".