747818161 has 8 divisors (see below), whose sum is σ = 755285504. Its totient is φ = 740385360.

The previous prime is 747818143. The next prime is 747818167. The reversal of 747818161 is 161818747.

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 747818161 - 2⁷ = 747818033 is a prime.

It is an alternating number because its digits alternate between odd and even.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (747818167) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 36016 + ... + 52846.

It is an arithmetic number, because the mean of its divisors is an integer number (94410688).

Almost surely, 2^747818161 is an apocalyptic number.

It is an amenable number.

747818161 is a deficient number, since it is larger than the sum of its proper divisors (7467343).

747818161 is a wasteful number, since it uses less digits than its factorization.

747818161 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17271.

The product of its digits is 75264, while the sum is 43.

The square root of 747818161 is about 27346.2641141345. The cubic root of 747818161 is about 907.6784041133.

The spelling of 747818161 in words is "seven hundred forty-seven million, eight hundred eighteen thousand, one hundred sixty-one".