164378041 has 3 divisors (see below), whose sum is σ = 164390863. Its totient is φ = 164365220.

The previous prime is 164378023. The next prime is 164378047. The reversal of 164378041 is 140873461.

It is a happy number.

The square root of 164378041 is 12821.

It is a perfect power (a square), and thus also a powerful number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in only one way, i.e., 9126441 + 155251600 = 3021^2 + 12460^2 .

It is not a de Polignac number, because 164378041 - 2²⁷ = 30160313 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164377988 and 164378006.

It is not an unprimeable number, because it can be changed into a prime (164378047) by changing a digit.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 6411 + ... + 19231.

Almost surely, 2^164378041 is an apocalyptic number.

164378041 is the 12821-st square number.

164378041 is the 6411-st centered octagonal number.

It is an amenable number.

164378041 is a deficient number, since it is larger than the sum of its proper divisors (12822).

164378041 is an frugal number, since it uses more digits than its factorization.

164378041 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 25642 (or 12821 counting only the distinct ones).

The product of its (nonzero) digits is 16128, while the sum is 34.

The cubic root of 164378041 is about 547.7906309871.

The spelling of 164378041 in words is "one hundred sixty-four million, three hundred seventy-eight thousand, forty-one".