74735149 has 4 divisors (see below), whose sum is σ = 75396636. Its totient is φ = 74073664.

The previous prime is 74735147. The next prime is 74735183. The reversal of 74735149 is 94153747.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 94153747 = 113 ⋅833219.

It can be written as a sum of positive squares in 2 ways, for example, as 5546025 + 69189124 = 2355^2 + 8318^2 .

It is a cyclic number.

It is not a de Polignac number, because 74735149 - 2¹ = 74735147 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 (74735147) 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, 330574 + ... + 330799.

It is an arithmetic number, because the mean of its divisors is an integer number (18849159).

Almost surely, 2^74735149 is an apocalyptic number.

It is an amenable number.

74735149 is a deficient number, since it is larger than the sum of its proper divisors (661487).

74735149 is a wasteful number, since it uses less digits than its factorization.

74735149 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 661486.

The product of its digits is 105840, while the sum is 40.

The square root of 74735149 is about 8644.9493347272. The cubic root of 74735149 is about 421.2193383160.

The spelling of 74735149 in words is "seventy-four million, seven hundred thirty-five thousand, one hundred forty-nine".