73140913 has 2 divisors, whose sum is σ = 73140914. Its totient is φ = 73140912.

The previous prime is 73140889. The next prime is 73140961. The reversal of 73140913 is 31904137.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 63728289 + 9412624 = 7983^2 + 3068^2 .

It is an emirp because it is prime and its reverse (31904137) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73140913 is a prime.

It is not a weakly prime, because it can be changed into another prime (73140983) 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 as a sum of consecutive naturals, namely, 36570456 + 36570457.

It is an arithmetic number, because the mean of its divisors is an integer number (36570457).

Almost surely, 2^73140913 is an apocalyptic number.

It is an amenable number.

73140913 is a deficient number, since it is larger than the sum of its proper divisors (1).

73140913 is an equidigital number, since it uses as much as digits as its factorization.

73140913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 73140913 is about 8552.2460792473. The cubic root of 73140913 is about 418.2026615076.

The spelling of 73140913 in words is "seventy-three million, one hundred forty thousand, nine hundred thirteen".