74734437389 has 2 divisors, whose sum is σ = 74734437390. Its totient is φ = 74734437388.

The previous prime is 74734437373. The next prime is 74734437419. The reversal of 74734437389 is 98373443747.

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., 56648760100 + 18085677289 = 238010^2 + 134483^2 .

It is an emirp because it is prime and its reverse (98373443747) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74734437389 - 2⁴ = 74734437373 is a prime.

It is a super-2 number, since 2×74734437389² (a number of 23 digits) contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (74734437329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37367218694 + 37367218695.

It is an arithmetic number, because the mean of its divisors is an integer number (37367218695).

Almost surely, 2^74734437389 is an apocalyptic number.

It is an amenable number.

74734437389 is a deficient number, since it is larger than the sum of its proper divisors (1).

74734437389 is an equidigital number, since it uses as much as digits as its factorization.

74734437389 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 42674688, while the sum is 59.

It can be divided in two parts, 7473443738 and 9, that added together give a palindrome (7473443747).

The spelling of 74734437389 in words is "seventy-four billion, seven hundred thirty-four million, four hundred thirty-seven thousand, three hundred eighty-nine".