73942189 has 2 divisors, whose sum is σ = 73942190. Its totient is φ = 73942188.

The previous prime is 73942159. The next prime is 73942247. The reversal of 73942189 is 98124937.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 51236964 + 22705225 = 7158^2 + 4765^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-73942189 is a prime.

It is a super-2 number, since 2×73942189² = 10934894628223442, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73942109) 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, 36971094 + 36971095.

It is an arithmetic number, because the mean of its divisors is an integer number (36971095).

Almost surely, 2^73942189 is an apocalyptic number.

It is an amenable number.

73942189 is a deficient number, since it is larger than the sum of its proper divisors (1).

73942189 is an equidigital number, since it uses as much as digits as its factorization.

73942189 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 108864, while the sum is 43.

The square root of 73942189 is about 8598.9644143932. The cubic root of 73942189 is about 419.7242880564.

The spelling of 73942189 in words is "seventy-three million, nine hundred forty-two thousand, one hundred eighty-nine".