1006818421 has 16 divisors (see below), whose sum is σ = 1238993280. Its totient is φ = 798451200.

The previous prime is 1006818413. The next prime is 1006818431. The reversal of 1006818421 is 1248186001.

It is a cyclic number.

It is not a de Polignac number, because 1006818421 - 2³ = 1006818413 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1006818401) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 64680 + ... + 78721.

It is an arithmetic number, because the mean of its divisors is an integer number (77437080).

Almost surely, 2^1006818421 is an apocalyptic number.

It is an amenable number.

1006818421 is a deficient number, since it is larger than the sum of its proper divisors (232174859).

1006818421 is a wasteful number, since it uses less digits than its factorization.

1006818421 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 143484.

The product of its (nonzero) digits is 3072, while the sum is 31.

The square root of 1006818421 is about 31730.4021562917. The cubic root of 1006818421 is about 1002.2676608274.

The spelling of 1006818421 in words is "one billion, six million, eight hundred eighteen thousand, four hundred twenty-one".