74241491 has 2 divisors, whose sum is σ = 74241492. Its totient is φ = 74241490.

The previous prime is 74241487. The next prime is 74241523. The reversal of 74241491 is 19414247.

It is an a-pointer prime, because the next prime (74241523) can be obtained adding 74241491 to its sum of digits (32).

It is a weak prime.

It is an emirp because it is prime and its reverse (19414247) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 74241491 - 2² = 74241487 is a prime.

It is not a weakly prime, because it can be changed into another prime (74241451) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 37120745 + 37120746.

It is an arithmetic number, because the mean of its divisors is an integer number (37120746).

Almost surely, 2^74241491 is an apocalyptic number.

74241491 is a deficient number, since it is larger than the sum of its proper divisors (1).

74241491 is an equidigital number, since it uses as much as digits as its factorization.

74241491 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 8064, while the sum is 32.

The square root of 74241491 is about 8616.3502134024. The cubic root of 74241491 is about 420.2898433939.

The spelling of 74241491 in words is "seventy-four million, two hundred forty-one thousand, four hundred ninety-one".