73729189 has 2 divisors, whose sum is σ = 73729190. Its totient is φ = 73729188.

The previous prime is 73729171. The next prime is 73729213. The reversal of 73729189 is 98192737.

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., 37332100 + 36397089 = 6110^2 + 6033^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73729189 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73729109) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36864594 + 36864595.

It is an arithmetic number, because the mean of its divisors is an integer number (36864595).

Almost surely, 2^73729189 is an apocalyptic number.

It is an amenable number.

73729189 is a deficient number, since it is larger than the sum of its proper divisors (1).

73729189 is an equidigital number, since it uses as much as digits as its factorization.

73729189 is an evil number, because the sum of its binary digits is even.

The product of its digits is 190512, while the sum is 46.

The square root of 73729189 is about 8586.5702699040. The cubic root of 73729189 is about 419.3208771567.

It can be divided in two parts, 7372 and 9189, that added together give a palindrome (16561).

The spelling of 73729189 in words is "seventy-three million, seven hundred twenty-nine thousand, one hundred eighty-nine".