5379820181 has 4 divisors (see below), whose sum is σ = 5402909772. Its totient is φ = 5356730592.

The previous prime is 5379820177. The next prime is 5379820261. The reversal of 5379820181 is 1810289735.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 1810289735 = 5 ⋅362057947.

It can be written as a sum of positive squares in 2 ways, for example, as 1187905156 + 4191915025 = 34466^2 + 64745^2 .

It is a cyclic number.

It is not a de Polignac number, because 5379820181 - 2² = 5379820177 is a prime.

It is a super-2 number, since 2×5379820181² = 57884930359789745522, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (5379820081) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 11544446 + ... + 11544911.

It is an arithmetic number, because the mean of its divisors is an integer number (1350727443).

Almost surely, 2^5379820181 is an apocalyptic number.

It is an amenable number.

5379820181 is a deficient number, since it is larger than the sum of its proper divisors (23089591).

5379820181 is a wasteful number, since it uses less digits than its factorization.

5379820181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 23089590.

The product of its (nonzero) digits is 120960, while the sum is 44.

The square root of 5379820181 is about 73347.2574879252. The cubic root of 5379820181 is about 1752.2225020480. Note that the first 3 decimals are identical.

The spelling of 5379820181 in words is "five billion, three hundred seventy-nine million, eight hundred twenty thousand, one hundred eighty-one".