618790369 has 4 divisors (see below), whose sum is σ = 618840496. Its totient is φ = 618740244.

The previous prime is 618790357. The next prime is 618790397. The reversal of 618790369 is 963097816.

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, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 618790369 - 2¹⁷ = 618659297 is a prime.

It is a super-2 number, since 2×618790369² = 765803041534312322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (618790399) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 7942 + ... + 36064.

It is an arithmetic number, because the mean of its divisors is an integer number (154710124).

Almost surely, 2^618790369 is an apocalyptic number.

It is an amenable number.

618790369 is a deficient number, since it is larger than the sum of its proper divisors (50127).

618790369 is a wasteful number, since it uses less digits than its factorization.

618790369 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 50126.

The product of its (nonzero) digits is 489888, while the sum is 49.

The square root of 618790369 is about 24875.4973618619. The cubic root of 618790369 is about 852.1469917833.

The spelling of 618790369 in words is "six hundred eighteen million, seven hundred ninety thousand, three hundred sixty-nine".