5181806355 has 16 divisors (see below), whose sum is σ = 9044607744. Its totient is φ = 2512390880.

The previous prime is 5181806347. The next prime is 5181806401. The reversal of 5181806355 is 5536081815.

It is not a de Polignac number, because 5181806355 - 2³ = 5181806347 is a prime.

It is a super-2 number, since 2×5181806355² = 53702234201436772050, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 15702279 + ... + 15702608.

It is an arithmetic number, because the mean of its divisors is an integer number (565287984).

Almost surely, 2^5181806355 is an apocalyptic number.

5181806355 is a gapful number since it is divisible by the number (55) formed by its first and last digit.

5181806355 is a deficient number, since it is larger than the sum of its proper divisors (3862801389).

5181806355 is a wasteful number, since it uses less digits than its factorization.

5181806355 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31404906.

The product of its (nonzero) digits is 144000, while the sum is 42.

The square root of 5181806355 is about 71984.7647422703. The cubic root of 5181806355 is about 1730.4553308255.

The spelling of 5181806355 in words is "five billion, one hundred eighty-one million, eight hundred six thousand, three hundred fifty-five".