1490641218 has 96 divisors (see below), whose sum is σ = 3723475392. Its totient is φ = 443102400.

The previous prime is 1490641211. The next prime is 1490641249. The reversal of 1490641218 is 8121460941.

1490641218 is a `hidden beast` number, since 1 + 4 + 9 + 0 + 641 + 2 + 1 + 8 = 666.

It is a super-2 number, since 2×1490641218² = 4444022481601047048, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (1490641211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 280708 + ... + 285968.

It is an arithmetic number, because the mean of its divisors is an integer number (38786202).

Almost surely, 2^1490641218 is an apocalyptic number.

1490641218 is a gapful number since it is divisible by the number (18) formed by its first and last digit.

It is a practical number, because each smaller number is the sum of distinct divisors of 1490641218, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1861737696).

1490641218 is an abundant number, since it is smaller than the sum of its proper divisors (2232834174).

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

1490641218 is a wasteful number, since it uses less digits than its factorization.

1490641218 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5342 (or 5330 counting only the distinct ones).

The product of its (nonzero) digits is 13824, while the sum is 36.

The square root of 1490641218 is about 38608.8230589848. The cubic root of 1490641218 is about 1142.3285783283.

The spelling of 1490641218 in words is "one billion, four hundred ninety million, six hundred forty-one thousand, two hundred eighteen".