74118749 has 4 divisors (see below), whose sum is σ = 74852700. Its totient is φ = 73384800.

The previous prime is 74118743. The next prime is 74118757. The reversal of 74118749 is 94781147.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94781147 = 6577 ⋅14411.

It can be written as a sum of positive squares in 2 ways, for example, as 47265625 + 26853124 = 6875^2 + 5182^2 .

It is a cyclic number.

It is not a de Polignac number, because 74118749 - 2⁸ = 74118493 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (74118743) 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, 366824 + ... + 367025.

It is an arithmetic number, because the mean of its divisors is an integer number (18713175).

Almost surely, 2^74118749 is an apocalyptic number.

It is an amenable number.

74118749 is a deficient number, since it is larger than the sum of its proper divisors (733951).

74118749 is a wasteful number, since it uses less digits than its factorization.

74118749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 733950.

The product of its digits is 56448, while the sum is 41.

The square root of 74118749 is about 8609.2246456925. The cubic root of 74118749 is about 420.0580966497.

The spelling of 74118749 in words is "seventy-four million, one hundred eighteen thousand, seven hundred forty-nine".