73743149 has 2 divisors, whose sum is σ = 73743150. Its totient is φ = 73743148.

The previous prime is 73743139. The next prime is 73743157. The reversal of 73743149 is 94134737.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 62520649 + 11222500 = 7907^2 + 3350^2 .

It is an emirp because it is prime and its reverse (94134737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73743149 - 2¹² = 73739053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73743139) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 36871574 + 36871575.

It is an arithmetic number, because the mean of its divisors is an integer number (36871575).

Almost surely, 2^73743149 is an apocalyptic number.

It is an amenable number.

73743149 is a deficient number, since it is larger than the sum of its proper divisors (1).

73743149 is an equidigital number, since it uses as much as digits as its factorization.

73743149 is an evil number, because the sum of its binary digits is even.

The product of its digits is 63504, while the sum is 38.

The square root of 73743149 is about 8587.3831287535. The cubic root of 73743149 is about 419.3473404436.

It can be divided in two parts, 737 and 43149, that multiplied together give a palindrome (31800813).

The spelling of 73743149 in words is "seventy-three million, seven hundred forty-three thousand, one hundred forty-nine".