164137541 has 4 divisors (see below), whose sum is σ = 165643500. Its totient is φ = 162631584.

The previous prime is 164137517. The next prime is 164137553. The reversal of 164137541 is 145731461.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 128913316 + 35224225 = 11354^2 + 5935^2 .

It is a cyclic number.

It is not a de Polignac number, because 164137541 - 2¹⁰ = 164136517 is a prime.

It is a super-2 number, since 2×164137541² = 53882264731053362, which contains 22 as substring.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 164137498 and 164137507.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (164137241) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 752816 + ... + 753033.

It is an arithmetic number, because the mean of its divisors is an integer number (41410875).

Almost surely, 2^164137541 is an apocalyptic number.

It is an amenable number.

164137541 is a deficient number, since it is larger than the sum of its proper divisors (1505959).

164137541 is a wasteful number, since it uses less digits than its factorization.

164137541 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1505958.

The product of its digits is 10080, while the sum is 32.

The square root of 164137541 is about 12811.6174232608. The cubic root of 164137541 is about 547.5233447786.

The spelling of 164137541 in words is "one hundred sixty-four million, one hundred thirty-seven thousand, five hundred forty-one".