1001216490 has 16 divisors (see below), whose sum is σ = 2402919648. Its totient is φ = 266991056.

The previous prime is 1001216471. The next prime is 1001216501. The reversal of 1001216490 is 946121001.

It is a self number, because there is not a number n which added to its sum of digits gives 1001216490.

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 7 ways as a sum of consecutive naturals, for example, 16686912 + ... + 16686971.

It is an arithmetic number, because the mean of its divisors is an integer number (150182478).

Almost surely, 2^1001216490 is an apocalyptic number.

1001216490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1001216490 is an abundant number, since it is smaller than the sum of its proper divisors (1401703158).

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

1001216490 is a wasteful number, since it uses less digits than its factorization.

1001216490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33373893.

The product of its (nonzero) digits is 432, while the sum is 24.

The square root of 1001216490 is about 31642.0051513807. The cubic root of 1001216490 is about 1000.4053323502.

Adding to 1001216490 its reverse (946121001), we get a palindrome (1947337491).

The spelling of 1001216490 in words is "one billion, one million, two hundred sixteen thousand, four hundred ninety".