1405008851 has 4 divisors (see below), whose sum is σ = 1407825000. Its totient is φ = 1402192704.

The previous prime is 1405008833. The next prime is 1405008859. The reversal of 1405008851 is 1588005041.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 1405008851 - 2¹⁰ = 1405007827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1405008859) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1407326 + ... + 1408323.

It is an arithmetic number, because the mean of its divisors is an integer number (351956250).

Almost surely, 2^1405008851 is an apocalyptic number.

1405008851 is a deficient number, since it is larger than the sum of its proper divisors (2816149).

1405008851 is an equidigital number, since it uses as much as digits as its factorization.

1405008851 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2816148.

The product of its (nonzero) digits is 6400, while the sum is 32.

The square root of 1405008851 is about 37483.4476936154. The cubic root of 1405008851 is about 1120.0214842286.

The spelling of 1405008851 in words is "one billion, four hundred five million, eight thousand, eight hundred fifty-one".