74738161 has 4 divisors (see below), whose sum is σ = 75067632. Its totient is φ = 74408692.

The previous prime is 74738141. The next prime is 74738173. The reversal of 74738161 is 16183747.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 74738161 - 2¹⁷ = 74607089 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 74738161.

It is not an unprimeable number, because it can be changed into a prime (74738101) 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, 164395 + ... + 164848.

It is an arithmetic number, because the mean of its divisors is an integer number (18766908).

Almost surely, 2^74738161 is an apocalyptic number.

It is an amenable number.

74738161 is a deficient number, since it is larger than the sum of its proper divisors (329471).

74738161 is a wasteful number, since it uses less digits than its factorization.

74738161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 329470.

The product of its digits is 28224, while the sum is 37.

The square root of 74738161 is about 8645.1235387356. The cubic root of 74738161 is about 421.2249969457.

The spelling of 74738161 in words is "seventy-four million, seven hundred thirty-eight thousand, one hundred sixty-one".