74389018 has 16 divisors (see below), whose sum is σ = 125018784. Its totient is φ = 32898960.

The previous prime is 74388953. The next prime is 74389019. The reversal of 74389018 is 81098347.

It is an alternating number because its digits alternate between odd and even.

It is not an unprimeable number, because it can be changed into a prime (74389019) 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 in 7 ways as a sum of consecutive naturals, for example, 44880 + ... + 46507.

It is an arithmetic number, because the mean of its divisors is an integer number (7813674).

Almost surely, 2^74389018 is an apocalyptic number.

74389018 is a deficient number, since it is larger than the sum of its proper divisors (50629766).

74389018 is a wasteful number, since it uses less digits than its factorization.

74389018 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 91437.

The product of its (nonzero) digits is 48384, while the sum is 40.

The square root of 74389018 is about 8624.9068400766. The cubic root of 74389018 is about 420.5680484526.

It can be divided in two parts, 7 and 4389018, that added together give a square (4389025 = 2095²).

The spelling of 74389018 in words is "seventy-four million, three hundred eighty-nine thousand, eighteen".