1841881481 has 12 divisors (see below), whose sum is σ = 2027122692. Its totient is φ = 1672308000.

The previous prime is 1841881429. The next prime is 1841881501.

1841881481 is nontrivially palindromic in base 10.

It can be written as a sum of positive squares in 2 ways, for example, as 679071481 + 1162810000 = 26059^2 + 34100^2 .

It is a de Polignac number, because none of the positive numbers 2^k-1841881481 is a prime.

It is a super-2 number, since 2×1841881481² = 6785054780101506722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1841881081) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90071 + ... + 108611.

It is an arithmetic number, because the mean of its divisors is an integer number (168926891).

Almost surely, 2^1841881481 is an apocalyptic number.

1841881481 is a gapful number since it is divisible by the number (11) formed by its first and last digit.

It is an amenable number.

1841881481 is a deficient number, since it is larger than the sum of its proper divisors (185241211).

1841881481 is a wasteful number, since it uses less digits than its factorization.

1841881481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19384 (or 19373 counting only the distinct ones).

The product of its digits is 65536, while the sum is 44.

The square root of 1841881481 is about 42917.1467015225. The cubic root of 1841881481 is about 1225.8026628459.

It can be divided in two parts, 18418 and 81481, that added together give a palindrome (99899).

The spelling of 1841881481 in words is "one billion, eight hundred forty-one million, eight hundred eighty-one thousand, four hundred eighty-one".