73164409 has 2 divisors, whose sum is σ = 73164410. Its totient is φ = 73164408.

The previous prime is 73164391. The next prime is 73164491. The reversal of 73164409 is 90446137.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 48958009 + 24206400 = 6997^2 + 4920^2 .

It is a cyclic number.

It is not a de Polignac number, because 73164409 - 2¹³ = 73156217 is a prime.

It is not a weakly prime, because it can be changed into another prime (73164499) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36582204 + 36582205.

It is an arithmetic number, because the mean of its divisors is an integer number (36582205).

Almost surely, 2^73164409 is an apocalyptic number.

It is an amenable number.

73164409 is a deficient number, since it is larger than the sum of its proper divisors (1).

73164409 is an equidigital number, since it uses as much as digits as its factorization.

73164409 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18144, while the sum is 34.

The square root of 73164409 is about 8553.6196431686. The cubic root of 73164409 is about 418.2474382604.

The spelling of 73164409 in words is "seventy-three million, one hundred sixty-four thousand, four hundred nine".