744305161 has 4 divisors (see below), whose sum is σ = 751261392. Its totient is φ = 737348932.

The previous prime is 744305143. The next prime is 744305179. The reversal of 744305161 is 161503447.

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 an interprime number because it is at equal distance from previous prime (744305143) and next prime (744305179).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-744305161 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (744305761) 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 3 ways as a sum of consecutive naturals, for example, 3477955 + ... + 3478168.

It is an arithmetic number, because the mean of its divisors is an integer number (187815348).

Almost surely, 2^744305161 is an apocalyptic number.

It is an amenable number.

744305161 is a deficient number, since it is larger than the sum of its proper divisors (6956231).

744305161 is a wasteful number, since it uses less digits than its factorization.

744305161 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956230.

The product of its (nonzero) digits is 10080, while the sum is 31.

The square root of 744305161 is about 27281.9566930233. The cubic root of 744305161 is about 906.2548493058.

The spelling of 744305161 in words is "seven hundred forty-four million, three hundred five thousand, one hundred sixty-one".