74494757169 has 12 divisors (see below), whose sum is σ = 122975472256. Its totient is φ = 42568432632.

The previous prime is 74494757119. The next prime is 74494757171. The reversal of 74494757169 is 96175749447.

74494757169 is a `hidden beast` number, since 7 + 4 + 494 + 75 + 71 + 6 + 9 = 666.

It is not a de Polignac number, because 74494757169 - 2⁷ = 74494757041 is a prime.

It is a super-2 number, since 2×74494757169² (a number of 23 digits) contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (63), and also a Moran number because the ratio is a prime number: 1182456463 = 74494757169 / (7 + 4 + 4 + 9 + 4 + 7 + 5 + 7 + 1 + 6 + 9).

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (74494757119) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 591228169 + ... + 591228294.

Almost surely, 2^74494757169 is an apocalyptic number.

It is an amenable number.

74494757169 is a deficient number, since it is larger than the sum of its proper divisors (48480715087).

74494757169 is a wasteful number, since it uses less digits than its factorization.

74494757169 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1182456476 (or 1182456473 counting only the distinct ones).

The product of its digits is 53343360, while the sum is 63.

The spelling of 74494757169 in words is "seventy-four billion, four hundred ninety-four million, seven hundred fifty-seven thousand, one hundred sixty-nine".