74137018 has 4 divisors (see below), whose sum is σ = 111205530. Its totient is φ = 37068508.

The previous prime is 74137013. The next prime is 74137043. The reversal of 74137018 is 81073147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 81073147 = 1741 ⋅46567.

It can be written as a sum of positive squares in only one way, i.e., 69105969 + 5031049 = 8313^2 + 2243^2 .

It is not an unprimeable number, because it can be changed into a prime (74137013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 18534253 + ... + 18534256.

Almost surely, 2^74137018 is an apocalyptic number.

74137018 is a deficient number, since it is larger than the sum of its proper divisors (37068512).

74137018 is a wasteful number, since it uses less digits than its factorization.

74137018 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37068511.

The product of its (nonzero) digits is 4704, while the sum is 31.

The square root of 74137018 is about 8610.2855934051. The cubic root of 74137018 is about 420.0926061859.

The spelling of 74137018 in words is "seventy-four million, one hundred thirty-seven thousand, eighteen".