990618058 has 8 divisors (see below), whose sum is σ = 1486146852. Its totient is φ = 495235776.

The previous prime is 990618043. The next prime is 990618059. The reversal of 990618058 is 850816099.

990618058 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It can be written as a sum of positive squares in 2 ways, for example, as 973003249 + 17614809 = 31193^2 + 4197^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a super-3 number, since 3×990618058³ (a number of 28 digits) contains 333 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 990617999 and 990618017.

It is not an unprimeable number, because it can be changed into a prime (990618059) 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, 17785 + ... + 47932.

Almost surely, 2^990618058 is an apocalyptic number.

990618058 is a deficient number, since it is larger than the sum of its proper divisors (495528794).

990618058 is a wasteful number, since it uses less digits than its factorization.

990618058 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 73256.

The product of its (nonzero) digits is 155520, while the sum is 46.

The square root of 990618058 is about 31474.0854990260. The cubic root of 990618058 is about 996.8628546104.

The spelling of 990618058 in words is "nine hundred ninety million, six hundred eighteen thousand, fifty-eight".