1941397281 has 8 divisors (see below), whose sum is σ = 2876144160. Its totient is φ = 1294264836.

The previous prime is 1941397267. The next prime is 1941397303. The reversal of 1941397281 is 1827931491.

It is not a de Polignac number, because 1941397281 - 2⁶ = 1941397217 is a prime.

It is a super-2 number, since 2×1941397281² = 7538046805348385922, which contains 22 as substring.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (1941397481) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35951775 + ... + 35951828.

It is an arithmetic number, because the mean of its divisors is an integer number (359518020).

Almost surely, 2^1941397281 is an apocalyptic number.

It is an amenable number.

1941397281 is a deficient number, since it is larger than the sum of its proper divisors (934746879).

1941397281 is an equidigital number, since it uses as much as digits as its factorization.

1941397281 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 71903612 (or 71903606 counting only the distinct ones).

The product of its digits is 108864, while the sum is 45.

The square root of 1941397281 is about 44061.2900514726. The cubic root of 1941397281 is about 1247.4930621847.

The spelling of 1941397281 in words is "one billion, nine hundred forty-one million, three hundred ninety-seven thousand, two hundred eighty-one".