618327990 has 48 divisors (see below), whose sum is σ = 1837319328. Its totient is φ = 141331968.

The previous prime is 618327989. The next prime is 618328019. The reversal of 618327990 is 99723816.

618327990 is a `hidden beast` number, since 618 + 3 + 27 + 9 + 9 + 0 = 666.

618327990 is digitally balanced in base 6, because in such base it contains all the possibile digits an equal number of times.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 490107 + ... + 491366.

It is an arithmetic number, because the mean of its divisors is an integer number (38277486).

Almost surely, 2^618327990 is an apocalyptic number.

618327990 is an abundant number, since it is smaller than the sum of its proper divisors (1218991338).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

618327990 is a wasteful number, since it uses less digits than its factorization.

618327990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 981493 (or 981490 counting only the distinct ones).

The product of its (nonzero) digits is 163296, while the sum is 45.

The square root of 618327990 is about 24866.2017606228. The cubic root of 618327990 is about 851.9346888374.

The spelling of 618327990 in words is "six hundred eighteen million, three hundred twenty-seven thousand, nine hundred ninety".