5421808786 has 8 divisors (see below), whose sum is σ = 8142205500. Its totient is φ = 2707740288.

The previous prime is 5421808757. The next prime is 5421808813. The reversal of 5421808786 is 6878081245.

It can be written as a sum of positive squares in 2 ways, for example, as 5414163561 + 7645225 = 73581^2 + 2765^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1579911 + ... + 1583338.

Almost surely, 2^5421808786 is an apocalyptic number.

5421808786 is a deficient number, since it is larger than the sum of its proper divisors (2720396714).

5421808786 is a wasteful number, since it uses less digits than its factorization.

5421808786 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3164108.

The product of its (nonzero) digits is 860160, while the sum is 49.

The square root of 5421808786 is about 73632.9327543050. The cubic root of 5421808786 is about 1756.7692955814.

The spelling of 5421808786 in words is "five billion, four hundred twenty-one million, eight hundred eight thousand, seven hundred eighty-six".