1021844490 has 16 divisors (see below), whose sum is σ = 2452426848. Its totient is φ = 272491856.

The previous prime is 1021844479. The next prime is 1021844501. The reversal of 1021844490 is 944481201.

It is an interprime number because it is at equal distance from previous prime (1021844479) and next prime (1021844501).

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 17030712 + ... + 17030771.

It is an arithmetic number, because the mean of its divisors is an integer number (153276678).

Almost surely, 2^1021844490 is an apocalyptic number.

1021844490 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

1021844490 is an abundant number, since it is smaller than the sum of its proper divisors (1430582358).

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

1021844490 is a wasteful number, since it uses less digits than its factorization.

1021844490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 34061493.

The product of its (nonzero) digits is 9216, while the sum is 33.

The square root of 1021844490 is about 31966.3024136355. The cubic root of 1021844490 is about 1007.2291106940.

The spelling of 1021844490 in words is "one billion, twenty-one million, eight hundred forty-four thousand, four hundred ninety".