74165161 has 4 divisors (see below), whose sum is σ = 84760192. Its totient is φ = 63570132.

The previous prime is 74165141. The next prime is 74165171. The reversal of 74165161 is 16156147.

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 74165161 - 2⁵ = 74165129 is a prime.

It is a super-2 number, since 2×74165161² = 11000942212311842, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (74165141) 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, 5297505 + ... + 5297518.

It is an arithmetic number, because the mean of its divisors is an integer number (21190048).

Almost surely, 2^74165161 is an apocalyptic number.

It is an amenable number.

74165161 is a deficient number, since it is larger than the sum of its proper divisors (10595031).

74165161 is a wasteful number, since it uses less digits than its factorization.

74165161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10595030.

The product of its digits is 5040, while the sum is 31.

The square root of 74165161 is about 8611.9197046884. The cubic root of 74165161 is about 420.1457562894.

The spelling of 74165161 in words is "seventy-four million, one hundred sixty-five thousand, one hundred sixty-one".