73854799849 has 2 divisors, whose sum is σ = 73854799850. Its totient is φ = 73854799848.

The previous prime is 73854799783. The next prime is 73854799913. The reversal of 73854799849 is 94899745837.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 57771487449 + 16083312400 = 240357^2 + 126820^2 .

It is a cyclic number.

It is not a de Polignac number, because 73854799849 - 2³⁵ = 39495061481 is a prime.

It is not a weakly prime, because it can be changed into another prime (73854799349) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36927399924 + 36927399925.

It is an arithmetic number, because the mean of its divisors is an integer number (36927399925).

Almost surely, 2^73854799849 is an apocalyptic number.

It is an amenable number.

73854799849 is a deficient number, since it is larger than the sum of its proper divisors (1).

73854799849 is an equidigital number, since it uses as much as digits as its factorization.

73854799849 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 548674560, while the sum is 73.

The spelling of 73854799849 in words is "seventy-three billion, eight hundred fifty-four million, seven hundred ninety-nine thousand, eight hundred forty-nine".