990218363 has 4 divisors (see below), whose sum is σ = 1048466520. Its totient is φ = 931970208.

The previous prime is 990218357. The next prime is 990218371. The reversal of 990218363 is 363812099.

990218363 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 363812099 = 7 ⋅51973157.

It is a cyclic number.

It is not a de Polignac number, because 990218363 - 2¹⁶ = 990152827 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 990218363.

It is not an unprimeable number, because it can be changed into a prime (990215363) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 29124053 + ... + 29124086.

It is an arithmetic number, because the mean of its divisors is an integer number (262116630).

Almost surely, 2^990218363 is an apocalyptic number.

990218363 is a deficient number, since it is larger than the sum of its proper divisors (58248157).

990218363 is a wasteful number, since it uses less digits than its factorization.

990218363 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 58248156.

The product of its (nonzero) digits is 69984, while the sum is 41.

The square root of 990218363 is about 31467.7352696377. The cubic root of 990218363 is about 996.7287650235.

The spelling of 990218363 in words is "nine hundred ninety million, two hundred eighteen thousand, three hundred sixty-three".