73949188133 has 2 divisors, whose sum is σ = 73949188134. Its totient is φ = 73949188132.

The previous prime is 73949188091. The next prime is 73949188141. The reversal of 73949188133 is 33188194937.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 67992127009 + 5957061124 = 260753^2 + 77182^2 .

It is a cyclic number.

It is not a de Polignac number, because 73949188133 - 2⁶ = 73949188069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73949188193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36974594066 + 36974594067.

It is an arithmetic number, because the mean of its divisors is an integer number (36974594067).

Almost surely, 2^73949188133 is an apocalyptic number.

It is an amenable number.

73949188133 is a deficient number, since it is larger than the sum of its proper divisors (1).

73949188133 is an equidigital number, since it uses as much as digits as its factorization.

73949188133 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 3919104, while the sum is 56.

The spelling of 73949188133 in words is "seventy-three billion, nine hundred forty-nine million, one hundred eighty-eight thousand, one hundred thirty-three".