73748749 has 2 divisors, whose sum is σ = 73748750. Its totient is φ = 73748748.

The previous prime is 73748713. The next prime is 73748777. The reversal of 73748749 is 94784737.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 60918025 + 12830724 = 7805^2 + 3582^2 .

It is an emirp because it is prime and its reverse (94784737) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 73748749 - 2⁷ = 73748621 is a prime.

It is a super-3 number, since 3×73748749³ (a number of 25 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (73748149) 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, 36874374 + 36874375.

It is an arithmetic number, because the mean of its divisors is an integer number (36874375).

Almost surely, 2^73748749 is an apocalyptic number.

It is an amenable number.

73748749 is a deficient number, since it is larger than the sum of its proper divisors (1).

73748749 is an equidigital number, since it uses as much as digits as its factorization.

73748749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1185408, while the sum is 49.

The square root of 73748749 is about 8587.7091823140. The cubic root of 73748749 is about 419.3579551502.

The spelling of 73748749 in words is "seventy-three million, seven hundred forty-eight thousand, seven hundred forty-nine".