74144161 has 8 divisors (see below), whose sum is σ = 91254464. Its totient is φ = 58663440.

The previous prime is 74144131. The next prime is 74144173. The reversal of 74144161 is 16144147.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 74144161 - 2⁹ = 74143649 is a prime.

It is a super-2 number, since 2×74144161² = 10994713220787842, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (74144131) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 407295 + ... + 407476.

It is an arithmetic number, because the mean of its divisors is an integer number (11406808).

Almost surely, 2^74144161 is an apocalyptic number.

It is an amenable number.

74144161 is a deficient number, since it is larger than the sum of its proper divisors (17110303).

74144161 is a wasteful number, since it uses less digits than its factorization.

74144161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 814791.

The product of its digits is 2688, while the sum is 28.

The square root of 74144161 is about 8610.7003780180. The cubic root of 74144161 is about 420.1060975347.

It can be divided in two parts, 74144 and 161, that added together give a triangular number (74305 = T₃₈₅).

The spelling of 74144161 in words is "seventy-four million, one hundred forty-four thousand, one hundred sixty-one".