74149618 has 8 divisors (see below), whose sum is σ = 111789612. Its totient is φ = 36886416.

The previous prime is 74149567. The next prime is 74149619. The reversal of 74149618 is 81694147.

It can be written as a sum of positive squares in 2 ways, for example, as 74080449 + 69169 = 8607^2 + 263^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×74149618³ (a number of 25 digits) contains 333 as substring.

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 (74149619) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 93705 + ... + 94492.

Almost surely, 2^74149618 is an apocalyptic number.

74149618 is a deficient number, since it is larger than the sum of its proper divisors (37639994).

74149618 is a wasteful number, since it uses less digits than its factorization.

74149618 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 188396.

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

The square root of 74149618 is about 8611.0172453665. The cubic root of 74149618 is about 420.1164038655.

The spelling of 74149618 in words is "seventy-four million, one hundred forty-nine thousand, six hundred eighteen".