1881421241 has 8 divisors (see below), whose sum is σ = 2155812864. Its totient is φ = 1608433920.

The previous prime is 1881421237. The next prime is 1881421247. The reversal of 1881421241 is 1421241881.

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

It is a cyclic number.

It is not a de Polignac number, because 1881421241 - 2² = 1881421237 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1881421198 and 1881421207.

It is not an unprimeable number, because it can be changed into a prime (1881421247) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 348200 + ... + 353561.

It is an arithmetic number, because the mean of its divisors is an integer number (269476608).

Almost surely, 2^1881421241 is an apocalyptic number.

It is an amenable number.

1881421241 is a deficient number, since it is larger than the sum of its proper divisors (274391623).

1881421241 is an equidigital number, since it uses as much as digits as its factorization.

1881421241 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 702151.

The product of its digits is 4096, while the sum is 32.

The square root of 1881421241 is about 43375.3529207544. The cubic root of 1881421241 is about 1234.5120903734.

The spelling of 1881421241 in words is "one billion, eight hundred eighty-one million, four hundred twenty-one thousand, two hundred forty-one".