74037036649 has 2 divisors, whose sum is σ = 74037036650. Its totient is φ = 74037036648.

The previous prime is 74037036629. The next prime is 74037036707. The reversal of 74037036649 is 94663073047.

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., 74020996624 + 16040025 = 272068^2 + 4005^2 .

It is a cyclic number.

It is not a de Polignac number, because 74037036649 - 2¹¹ = 74037034601 is a prime.

It is not a weakly prime, because it can be changed into another prime (74037036629) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37018518324 + 37018518325.

It is an arithmetic number, because the mean of its divisors is an integer number (37018518325).

Almost surely, 2^74037036649 is an apocalyptic number.

It is an amenable number.

74037036649 is a deficient number, since it is larger than the sum of its proper divisors (1).

74037036649 is an equidigital number, since it uses as much as digits as its factorization.

74037036649 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 49.

The spelling of 74037036649 in words is "seventy-four billion, thirty-seven million, thirty-six thousand, six hundred forty-nine".