818669741 has 8 divisors (see below), whose sum is σ = 827380344. Its totient is φ = 809971200.

The previous prime is 818669737. The next prime is 818669743. The reversal of 818669741 is 147966818.

It can be written as a sum of positive squares in 4 ways, for example, as 41654116 + 777015625 = 6454^2 + 27875^2 .

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 818669741 - 2² = 818669737 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 818669741.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (818669743) 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, 213941 + ... + 217733.

It is an arithmetic number, because the mean of its divisors is an integer number (103422543).

Almost surely, 2^818669741 is an apocalyptic number.

It is an amenable number.

818669741 is a deficient number, since it is larger than the sum of its proper divisors (8710603).

818669741 is a wasteful number, since it uses less digits than its factorization.

818669741 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6031.

The product of its digits is 580608, while the sum is 50.

The square root of 818669741 is about 28612.4053690003. The cubic root of 818669741 is about 935.4837463610.

The spelling of 818669741 in words is "eight hundred eighteen million, six hundred sixty-nine thousand, seven hundred forty-one".