73764930409 has 3 divisors (see below), whose sum is σ = 73765202007. Its totient is φ = 73764658812.

The previous prime is 73764930391. The next prime is 73764930451. The reversal of 73764930409 is 90403946737.

The square root of 73764930409 is 271597.

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, and also an emirpimes, since its reverse is a distinct semiprime: 90403946737 = 13 ⋅6954149749.

It can be written as a sum of positive squares in only one way, i.e., 13579225 + 73751351184 = 3685^2 + 271572^2 .

It is not a de Polignac number, because 73764930409 - 2¹⁷ = 73764799337 is a prime.

It is a super-2 number, since 2×73764930409² (a number of 23 digits) contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73764930709) 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, 135799 + ... + 407395.

It is an arithmetic number, because the mean of its divisors is an integer number (24588400669).

Almost surely, 2^73764930409 is an apocalyptic number.

73764930409 is the 271597-th square number.

73764930409 is the 135799-th centered octagonal number.

It is an amenable number.

73764930409 is a deficient number, since it is larger than the sum of its proper divisors (271598).

73764930409 is an frugal number, since it uses more digits than its factorization.

73764930409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 543194 (or 271597 counting only the distinct ones).

The product of its (nonzero) digits is 3429216, while the sum is 52.

The spelling of 73764930409 in words is "seventy-three billion, seven hundred sixty-four million, nine hundred thirty thousand, four hundred nine".