74428948049 has 2 divisors, whose sum is σ = 74428948050. Its totient is φ = 74428948048.

The previous prime is 74428948039. The next prime is 74428948051. The reversal of 74428948049 is 94084982447.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 70155057424 + 4273890625 = 264868^2 + 65375^2 .

It is a cyclic number.

It is not a de Polignac number, because 74428948049 - 2⁸ = 74428947793 is a prime.

Together with 74428948051, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (74428948039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37214474024 + 37214474025.

It is an arithmetic number, because the mean of its divisors is an integer number (37214474025).

Almost surely, 2^74428948049 is an apocalyptic number.

It is an amenable number.

74428948049 is a deficient number, since it is larger than the sum of its proper divisors (1).

74428948049 is an equidigital number, since it uses as much as digits as its factorization.

74428948049 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 18579456, while the sum is 59.

The spelling of 74428948049 in words is "seventy-four billion, four hundred twenty-eight million, nine hundred forty-eight thousand, forty-nine".