1808027481 has 8 divisors (see below), whose sum is σ = 2596142080. Its totient is φ = 1112632272.

The previous prime is 1808027461. The next prime is 1808027483. The reversal of 1808027481 is 1847208081.

It is a happy number.

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

It is not a de Polignac number, because 1808027481 - 2⁵ = 1808027449 is a prime.

It is a super-2 number, since 2×1808027481² = 6537926744102410722, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (39), and also a Moran number because the ratio is a prime number: 46359679 = 1808027481 / (1 + 8 + 0 + 8 + 0 + 2 + 7 + 4 + 8 + 1).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1808027483) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 23179801 + ... + 23179878.

It is an arithmetic number, because the mean of its divisors is an integer number (324517760).

Almost surely, 2^1808027481 is an apocalyptic number.

It is an amenable number.

1808027481 is a deficient number, since it is larger than the sum of its proper divisors (788114599).

1808027481 is a wasteful number, since it uses less digits than its factorization.

1808027481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46359695.

The product of its (nonzero) digits is 28672, while the sum is 39.

The square root of 1808027481 is about 42520.9063990880. The cubic root of 1808027481 is about 1218.2460420333.

The spelling of 1808027481 in words is "one billion, eight hundred eight million, twenty-seven thousand, four hundred eighty-one".